Best U23 Young Left-Backs in the Liga Portugal
10 players aged 23 or under · ranked by Analytical Strength Index
Best Young Left-Backs in the Liga Portugal (Jul 2026)
Ranked by Analytical Strength Index
Use the search bar below to find specific players, or apply filters to narrow results by club, age range, or market value. Click the chart icon next to any player to view their historical value trajectory and forecast.
Player Rankings
Ranked by Analytical Strength Index. Click any player to view full profile, or click the chart icon to see value history.
Samuel Dahl
SL Benfica • 23 years old
€7.8M
€9.0M
+15.6%
Expected: €9.5M
60.5
Chissumba
FC Alverca • 21 years old
€4.3M
€5.0M
+15.6%
Expected: €5.7M
52.2
Arnau Solà
FC Arouca • 23 years old
€432K
€500K
+15.6%
Expected: €529K
20.2
Tiago Parente
GD Estoril Praia • 22 years old
€432K
€500K
+15.6%
Expected: €551K
19.8
Guilherme Montóia
CF Estrela Amadora • 22 years old
€432K
€500K
+15.6%
Expected: €551K
19.8
Tiago Parente
SL Benfica • 20 years old
€432K
€500K
+15.6%
Expected: €595K
19.0
Ricardo Fernandes
GD Estoril Praia • 23 years old
€259K
€300K
+15.6%
Expected: €318K
13.7
Hélder Sá
Rio Ave FC • 23 years old
€259K
€300K
+15.6%
Expected: €318K
13.7
Augusto Dabó
Boavista FC • 22 years old
€259K
€300K
+15.6%
Expected: €331K
13.3
Diogo Costa
FC Famalicão • 23 years old
€216K
€250K
+15.6%
Expected: €265K
11.4
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Explore Market Size by Position in Liga Portugal
Interactive bubble chart showing predicted 2-year growth vs current age for all Liga Portugal Young Left-Backs. Identify undervalued assets and track market momentum across 8 clubs with €17.2M combined value.
Age Distribution: Liga Portugal Young Left-Backs
The Liga Portugal LB market shows 2 distinct age segments, with the largest cohort in the 21-23 bracket (9 players, 90% of market). The 21-23 age group holds the most value at €16.7M, averaging €1.9M per player.
Top Young Left-Backs by Age Bracket
U21 Years (1 players)
21-23 Years (9 players)
Market Value Distribution
Elite Tier Concentration
The top 1 Young Left-Backs (10% of players) control €9.0M
Market Tiers
Market structure shows distributed value with mid (€5-15m) tier representing 20% of the Liga Portugal LB pool.
Mid (€5-15M)
Emerging (<€5M)
Club Distribution: Liga Portugal Young Left-Backs
Among 8 Liga Portugal clubs, SL Benfica leads with 2 Young Left-Backs worth €9.5M (averaging €4.8M per player). The top 10 clubs account for 100% of tracked Young Left-Backs.
SL Benfica (2 Young Left-Backs)
FC Alverca (1 Young Left-Backs)
GD Estoril Praia (2 Young Left-Backs)
FC Arouca (1 Young Left-Backs)
Scout Tools
Advanced analytics for scouting and recruitment decisions. Each tool provides unique insights into player value, potential, and market dynamics.
Pre-Peak Value Efficiency (PPVE)
Identifies pre-peak players offering exceptional value relative to their age bracket. Higher PPVE = better value.
Understanding Pre-Peak Value Efficiency (PPVE)
SL Benfica's Samuel Dahl at 23 years old has the highest Pre-Peak Value Efficiency at 18.00×. That means Samuel Dahl is valued 18.00× higher than the median player in the 21-23 age bracket-representing exceptional value before reaching peak age.
In second is FC Alverca's Chissumba, who is 21 years old, with a 10.00× PPVE. Third is Tiago Parente of SL Benfica, who is 20 years old with a 1.00× PPVE.
How PPVE is calculated: PPVE compares a player's current market value to the median value of all players in their age bracket. A PPVE of 18.00× means the player is worth 1700% more than typical players their age-making them high-value targets before they reach peak value.
PPVE by Age Bracket
| Rank | Player | Age | Bracket | Current Value | Bracket Median | PPVE |
|---|---|---|---|---|---|---|
| #1 | Samuel Dahl SL Benfica | 23 | 21-23 | €9.0M | €500K | 18.00× |
| #2 | Chissumba FC Alverca | 21 | 21-23 | €5.0M | €500K | 10.00× |
| #3 | Tiago Parente SL Benfica | 20 | U21 | €500K | €500K | 1.00× |
| #4 | Guilherme Montóia CF Estrela Amadora | 22 | 21-23 | €500K | €500K | 1.00× |
| #5 | Arnau Solà FC Arouca | 23 | 21-23 | €500K | €500K | 1.00× |
| #6 | Tiago Parente GD Estoril Praia | 22 | 21-23 | €500K | €500K | 1.00× |
| #7 | Augusto Dabó Boavista FC | 22 | 21-23 | €300K | €500K | 0.60× |
| #8 | Hélder Sá Rio Ave FC | 23 | 21-23 | €300K | €500K | 0.60× |
| #9 | Ricardo Fernandes GD Estoril Praia | 23 | 21-23 | €300K | €500K | 0.60× |
| #10 | Diogo Costa FC Famalicão | 23 | 21-23 | €250K | €500K | 0.50× |
Return-to-Peak Potential (RPP)
Recovery potential from current value to forecasted peak. Shows how much upside remains for players approaching their prime.
Understanding Return-to-Peak Potential (RPP)
SL Benfica's Tiago Parente at 20 years old has the highest Return-to-Peak Potential at +40%. That means Tiago Parente is projected to appreciate 40% as they reach their peak age in 6 years-representing significant upside before entering their prime.
In second is FC Alverca's Chissumba, who is 21 years old, with a +35% RPP (5 years to peak). Third is Guilherme Montóia of CF Estrela Amadora, who is 22 years old with a +30% RPP (4 years to peak).
How RPP is calculated: RPP compares a player's current market value to their forecasted peak value, calculating the percentage appreciation potential. A 40% RPP means the player is expected to gain 40% value as they enter their prime-making them excellent growth investments.
Recovery Potential by Player
| Rank | Player | Age | Years to Peak | Current | Peak Forecast | RPP % |
|---|---|---|---|---|---|---|
| #1 | Tiago Parente SL Benfica | 20 | 6 | €500K | €831K | +40% |
| #2 | Chissumba FC Alverca | 21 | 5 | €5.0M | €7.7M | +35% |
| #3 | Guilherme Montóia CF Estrela Amadora | 22 | 4 | €500K | €719K | +30% |
| #4 | Tiago Parente GD Estoril Praia | 22 | 4 | €500K | €719K | +30% |
| #5 | Augusto Dabó Boavista FC | 22 | 4 | €300K | €431K | +30% |
| #6 | Hélder Sá Rio Ave FC | 23 | 3 | €300K | €401K | +25% |
| #7 | Arnau Solà FC Arouca | 23 | 3 | €500K | €668K | +25% |
| #8 | Ricardo Fernandes GD Estoril Praia | 23 | 3 | €300K | €401K | +25% |
| #9 | Diogo Costa FC Famalicão | 23 | 3 | €250K | €334K | +25% |
| #10 | Samuel Dahl SL Benfica | 23 | 3 | €9.0M | €12.0M | +25% |
Risk-Adjusted Upside (RAU)
Upside potential weighted against forecast uncertainty. Higher RAU = better risk-reward profile.
Understanding Risk-Adjusted Upside (RAU)
SL Benfica's Tiago Parente has the highest Risk-Adjusted Upside at 69.6. That means Tiago Parente has 19% upside potential with only 0% forecast uncertainty-representing excellent risk-reward for value appreciation.
In second is FC Alverca's Chissumba with a 55.6 RAU (15% upside, 0% uncertainty). Third is Guilherme Montóia of CF Estrela Amadora with a 46.5 RAU (10% upside, 0% uncertainty).
How RAU is calculated: RAU divides upside potential by forecast uncertainty (RAU = Upside % ÷ Uncertainty %). A RAU of 69.6 means the upside is 69.6× greater than the uncertainty-making it a high-confidence growth opportunity. Target RAU ≥2.0 for balanced risk-reward.
Risk-Adjusted Upside by Player
| Rank | Player | Expected | Range | Upside % | RAU |
|---|---|---|---|---|---|
| #1 | Tiago Parente SL Benfica | €595K | €527K-664K | +19% | 69.6 |
| #2 | Chissumba FC Alverca | €5.7M | €5.1M-6.4M | +15% | 55.6 |
| #3 | Guilherme Montóia CF Estrela Amadora | €551K | €496K-606K | +10% | 46.5 |
| #4 | Tiago Parente GD Estoril Praia | €551K | €496K-606K | +10% | 46.5 |
| #5 | Augusto Dabó Boavista FC | €331K | €298K-364K | +10% | 46.5 |
| #6 | Hélder Sá Rio Ave FC | €318K | €286K-349K | +6% | 27.6 |
| #7 | Ricardo Fernandes GD Estoril Praia | €318K | €286K-349K | +6% | 27.6 |
| #8 | Samuel Dahl SL Benfica | €9.5M | €8.6M-10.5M | +6% | 27.6 |
| #9 | Arnau Solà FC Arouca | €529K | €476K-582K | +6% | 27.6 |
| #10 | Diogo Costa FC Famalicão | €265K | €238K-291K | +6% | 27.6 |
Roster Pressure Index (RPI)
Squad depth pressure based on Z-score distribution. Negative RPI = thin depth, positive = deep roster.
What This Shows
Z-Score explained: Measures how many standard deviations a player's strength is from the position average. Z-Score = 0 means average, +1.0 is one standard deviation above average, -1.0 is below average.
How to use: RPI < -1.0 indicates critical depth shortage. These positions need immediate reinforcement. RPI > +1.0 suggests strong depth, allowing selective, high-value additions only.
Current market: young left-back position shows weak depth (avg Z-score: -0.00). RPI: -0.00.
Position Depth Analysis
Highest Z-Scores
Lowest Z-Scores
Age-Share Concentration (ASC)
Identifies players capturing disproportionate value relative to age group representation. Positive ASC = value concentration.
Understanding Age-Share Concentration (ASC)
Boavista FC's Augusto Dabó in the 21-23 age bracket has the highest Age-Share Concentration at +7.1%. That means Samuel Dahl captures 97.1% of total market value while representing only 90.0% of players in their age group-showing dominant elite status.
In second is Rio Ave FC's Hélder Sá with a +7.1% ASC (97.1% value share vs 90.0% player share in 21-23 bracket). Third is Guilherme Montóia of CF Estrela Amadora with a +7.1% ASC (97.1% value vs 90.0% players in 21-23 bracket).
How ASC is calculated: ASC = (% of total value) - (% of total players) in age bracket. A +7.1% ASC means the player captures 7.1% more market value than their numerical representation-indicating marquee status. ASC > +15% = elite dominance, ASC < -15% = potential value targets.
Value Concentration by Player
| Rank | Player | Age Bracket | Value Share | Player Share | ASC |
|---|---|---|---|---|---|
| #1 | Augusto Dabó Boavista FC | 21-23 | 97.1% | 90.0% | +7.1% |
| #2 | Hélder Sá Rio Ave FC | 21-23 | 97.1% | 90.0% | +7.1% |
| #3 | Guilherme Montóia CF Estrela Amadora | 21-23 | 97.1% | 90.0% | +7.1% |
| #4 | Samuel Dahl SL Benfica | 21-23 | 97.1% | 90.0% | +7.1% |
| #5 | Arnau Solà FC Arouca | 21-23 | 97.1% | 90.0% | +7.1% |
| #6 | Ricardo Fernandes GD Estoril Praia | 21-23 | 97.1% | 90.0% | +7.1% |
| #7 | Chissumba FC Alverca | 21-23 | 97.1% | 90.0% | +7.1% |
| #8 | Tiago Parente GD Estoril Praia | 21-23 | 97.1% | 90.0% | +7.1% |
| #9 | Diogo Costa FC Famalicão | 21-23 | 97.1% | 90.0% | +7.1% |
| #10 | Tiago Parente SL Benfica | U21 | 2.9% | 10.0% | -7.1% |
Buy-Now vs Wait-List Map
Categorizes players by age position and upside potential to guide timing of acquisition.
What This Shows
How to use:"Buy Now - High Upside" = immediate priority targets."Watch List" = monitor for 6-12 months."Peak" = pay premium for proven performers."Aging" = short-term depth only.
Current market: 1 immediate targets, 9 standard acquisitions, 0 watch-list prospects, 0 at peak.
BUY NOW - High Upside
WATCH LIST - High Upside
No players in this category
BUY NOW - Medium Upside
PEAK Players
No players in this category
Price vs Peer Z-Score
IQR-based pricing analysis relative to position peers. Identifies over/undervalued players vs market.
What This Shows
How to use: Z-score < -1.5 = significantly undervalued (potential bargain). Z-score > +1.5 = premium pricing (requires strong justification). Within ±1.0 = fair market value.
Current market: Position median is €9.0M. 0 undervalued, 0 premium.
Value Positioning vs Peers
| Player | Market Value | Position Median | Z-Score | Assessment |
|---|---|---|---|---|
Chissumba FC Alverca | €5.0M | €500K | -1.00 | Good Value |
Diogo Costa FC Famalicão | €250K | €500K | -0.25 | Fair Value |
Augusto Dabó Boavista FC | €300K | €500K | 0.00 | Fair Value |
Tiago Parente SL Benfica | €500K | €500K | 0.00 | Fair Value |
Hélder Sá Rio Ave FC | €300K | €500K | 0.00 | Fair Value |
Samuel Dahl SL Benfica | €9.0M | €500K | 0.00 | Fair Value |
Ricardo Fernandes GD Estoril Praia | €300K | €500K | 0.00 | Fair Value |
Guilherme Montóia CF Estrela Amadora | €500K | €500K | +1.00 | Above Market |
Arnau Solà FC Arouca | €500K | €500K | +1.00 | Above Market |
Tiago Parente GD Estoril Praia | €500K | €500K | +1.00 | Above Market |
Market Overview: Liga Portugal Young Left-Backs 2026-27
Our database tracked 10 Liga Portugal Young Left-Backs in the 2026-27 season, representing 8 clubs with a combined market value of €17.2M. The average market value for Liga Portugal Young Left-Backs was €1.7M, with the average age at 22 years old.
The most valuable young left-back in the Liga Portugal was Samuel Dahl, worth €9.0M and played for SL Benfica at 23 years old. The top 5 Young Left-Backs averaged €3.1M in market value, including Chissumba and Arnau Solà.
Age distribution showed the youngest tracked young left-back was Tiago Parente (20 years, SL Benfica, €500K), while the oldest was Samuel Dahl (23 years, SL Benfica, €9.0M). Research shows Young Left-Backs typically peak at age 27.
Historical analysis showed 10 Young Left-Backs (100%) increased in market value over the following 12 months based on age-curve trajectories, then-current performance trends, and playing time analysis. The Liga Portugal market for Young Left-Backs remained actively developing with emerging talent in the 2026-27 season.
How We Rank Liga Portugal Young Left-Backs
Our Analytical Strength Index is calibrated specifically for young left-backs, using position-specific age curves and playing time benchmarks. The model draws from academic research on player valuation (Franck & Nüesch, 2012) and age-performance curves (Dendir, 2016).
Scoring Components for LB
Historical Achievement Index (35%)
Peak career market value for Liga Portugal young left-backs, reflecting proven track record and reputation. Uses log-scale to account for exponential value distribution at elite level.
Current Performance Proxy (30%)
Present market value for Liga Portugal young left-backs, capturing recent form, injuries, and current performance level. Weighted to reflect age-related depreciation patterns.
Playing Time Utilization (18%)
Defenders with 2,500+ minutes score highest, indicating regular starting role and sustained performance.
Age-Adjusted Performance Curve (12%)
Defenders peak at 27 with 5.0%/year decline rate. Pre-peak players score higher on development trajectory.
Competition Level Adjustment (3%)
Liga Portugal competition level factored into comparative strength assessment.
Performance Expectations Multiplier (2%)
Players at clubs with Champions League pedigree face higher performance standards and tactical complexity, contributing to development and market validation.
LB Performance Benchmarks
Peak Age: 27 years (balance of physicality and tactical intelligence)
Decline Rate: 5.0% per year (moderate decline as positioning offsets pace loss)
Optimal Minutes: 2,500 per season (regular starter with rotation management)
1-Year Market Value Forecast
Probabilistic model combining age-curve depreciation, value momentum, and playing time factors:
• Age Factor: Defender -5.0%/year post-peak, +5%/year pre-peak
• Value Trajectory: Near career peak (>95% of peak value): +3% momentum | Moderate decline: -5%
• Playing Time Factor: Regular starters (+2%), Squad rotation (-2%)
• Forecast Range: ±10% confidence interval
Research Foundation
• Dendir (2016): Age-performance curves for young left-backs
• Carmichael et al. (2011): Player depreciation in top leagues
• Franck & Nüesch (2012): Hedonic pricing models for talent valuation
• Szymanski, S. (2015). Money and Soccer: A Soccernomics Guide
Frequently Asked Questions
Common questions about Liga Portugal Young Left-Backs in the 2026-27 season
Who are the most valuable Young Left-Backs in the Liga Portugal in 2026-27?
The most valuable young left-back in the Liga Portugal in 2026-27 is Samuel Dahl, who is worth €9.0M and plays for SL Benfica. The second most valuable is Chissumba (€5.0M, FC Alverca), followed by Arnau Solà (€500K, FC Arouca). Our database tracks 10 Liga Portugal Young Left-Backs with comprehensive market valuations updated for the 2026-27 season.
How are Liga Portugal Young Left-Backs ranked?
Liga Portugal Young Left-Backs are ranked by our proprietary Analytical Strength Index, which is specifically calibrated for Young Left-Backs. The score combines six factors: Historical Achievement Index (35%) measuring peak career value, Current Performance Proxy (30%) reflecting recent market signals, Playing Time Utilization (18%) tracking minutes played, Age-Adjusted Performance Curve (12%) using position-specific peak ages, League Quality Coefficient (3%) for Liga Portugal competition level, and Club Tier Multiplier (2%) accounting for club prestige. This methodology is grounded in academic research including work by Dendir (2016) on age-performance curves and Franck & Nüesch (2012) on hedonic pricing models.
What age do Young Left-Backs peak?
Defenders typically peak at age 27, with a decline rate of 5.0% per year after peak. Research shows defenders balance physical attributes with tactical intelligence, allowing them to maintain high performance through their late 20s. The optimal playing time for peak performance is around 2,500 minutes per season.
How much does it cost to sign a top young left-back from the Liga Portugal?
Transfer fees for Liga Portugal Young Left-Backs vary significantly based on market value, contract length, and club bargaining position. For the top-ranked young left-back Samuel Dahl (market value: €9.0M), estimated transfer fees would range from €7.2M to €12.6M depending on contract situation. Players with longer contracts (3+ years) command premium fees (1.2-1.4× market value), while those in the final year may be available for 0.8-1.1× market value. Our fee estimates are derived from historical transfer patterns and contract-clock modifiers validated against actual Liga Portugal transactions.
What is the value forecast for Liga Portugal Young Left-Backs?
Our 1-year forecast model projects market value changes for Liga Portugal Young Left-Backs based on age-curve depreciation, historical trajectory, and playing time adjustments. The forecast combines three factors: age-based appreciation/depreciation (pre-peak players gain ~5% per year toward peak age, post-peak players decline at position-specific rates), market trajectory momentum (comparing current to peak value), and playing time confidence (regular starters receive +2% boost). Forecast confidence intervals account for position-specific volatility-defenders have ±10% volatility. Young players (under 22) and older players (over 32) receive 1.15× uncertainty multipliers due to unpredictable development or decline patterns.
Where does the Liga Portugal young left-back data come from?
Our Liga Portugal young left-back data is sourced from Football Analytics AI's proprietary Transfer Intelligence Database, which aggregates market valuations, player statistics, contract information, and transfer histories from multiple industry sources. Market values are updated regularly based on player performance, injuries, contract negotiations, and transfer market activity. We enhance this data with our proprietary analytics including position-specific scoring algorithms, age-performance curves calibrated to academic research, and statistical forecast models. All data is validated against official Liga Portugal sources and updated monthly for the 2026-27 season to ensure accuracy for recruitment and investment decisions.