Under 23 · Eredivisie · 2026-27

Best U23 Young Centre-Backs in the Eredivisie

26 players aged 23 or under · ranked by Analytical Strength Score

Best Young Centre-Backs in the Eredivisie (Apr 2026)

Ranked by Analytical Strength Score

Market Overview: Eredivisie Young Centre-Backs 2026-27

Our database tracked 26 Eredivisie Young Centre-Backs in the 2026-27 season, representing 14 clubs with a combined market value of €88.7M. The average market value for Eredivisie Young Centre-Backs was €3.4M, with the average age at 21.9 years old.

The most valuable young centre-back in the Eredivisie was Ryan Flamingo, worth €20.0M and played for PSV Eindhoven at 23 years old. The top 5 Young Centre-Backs averaged €12.0M in market value, including Youri Baas and Wouter Goes.

Age distribution showed the youngest tracked young centre-back was Marvin Young (20 years, Sparta Rotterdam, €4.0M), while the oldest was Ryan Flamingo (23 years, PSV Eindhoven, €20.0M). Research shows Young Centre-Backs typically peak at age 27.

Historical analysis showed 26 Young Centre-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 Eredivisie market for Young Centre-Backs remained actively developing with emerging talent in the 2026-27 season.

💡 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.

Market Intelligence

Explore Market Size by Position in Eredivisie

Interactive bubble chart showing predicted 2-year growth vs current age for all Eredivisie Young Centre-Backs. Identify undervalued assets and track market momentum across 14 clubs with €88.7M combined value.

Players Tracked

By League

Premier League La Liga Bundesliga Serie A Ligue 1

By Position

GK CB LB RB CDM

More Positions

CM CAM LW RW ST

By Season

2025-26 2024-25 2023-24 2022-23

Age Distribution: Eredivisie Young Centre-Backs

The Eredivisie CB market shows 2 distinct age segments, with the largest cohort in the 21-23 bracket (22 players, 85% of market). The 21-23 age group holds the most value at €82.3M, averaging €3.7M per player.

U21 years4 players (15%)

€6.4MAvg: €1.6M

Top player: Marvin Young (€4.0M)

21-23 years22 players (85%)

€82.3MAvg: €3.7M

Top player: Ryan Flamingo (€20.0M)

Top Young Centre-Backs by Age Bracket

U21 Years (4 players)

1. Marvin Young(20yo)

€4.0M

2. Dies Janse(20yo)

€2.0M

3. Billy van Duijl(20yo)

€200K

4. Sven Bouland(20yo)

€150K

21-23 Years (22 players)

1. Ryan Flamingo(23yo)

€20.0M

2. Youri Baas(23yo)

€15.0M

3. Wouter Goes(21yo)

€10.0M

4. Yarek Gasiorowski(21yo)

€10.0M

5. Ahmetcan Kaplan(23yo)

€5.0M

Market Value Distribution

Elite Tier Concentration

51%of market value

The top 3 Young Centre-Backs (12% of players) control €45.0M

1. Ryan Flamingo€20.0M

2. Youri Baas€15.0M

3. Wouter Goes€10.0M

Market Tiers

High (€15-30M)2 players (8%)

€35.0M

Mid (€5-15M)3 players (12%)

€25.0M

Emerging (<€5M)21 players (81%)

€28.7M

Market structure shows distributed value with high (€15-30m) tier representing 8% of the Eredivisie CB pool.

High (€15-30M)

1. Ryan Flamingo

PSV Eindhoven€20.0M

2. Youri Baas

Ajax Amsterdam€15.0M

Mid (€5-15M)

1. Wouter Goes

AZ Alkmaar€10.0M

2. Yarek Gasiorowski

PSV Eindhoven€10.0M

3. Ahmetcan Kaplan

NEC Nijmegen€5.0M

Emerging (<€5M)

1. Adamo Nagalo

PSV Eindhoven€4.0M

2. Marvin Young

Sparta Rotterdam€4.0M

3. Nikolai Hopland

SC Heerenveen€3.0M

4. Max Bruns

Twente Enschede FC€2.5M

5. Thijmen Blokzijl

FC Groningen€2.5M

Club Distribution: Eredivisie Young Centre-Backs

Among 14 Eredivisie clubs, PSV Eindhoven leads with 3 Young Centre-Backs worth €34.0M (averaging €11.3M per player). The top 10 clubs account for 77% of tracked Young Centre-Backs.

PSV Eindhoven

3 players • €34.0M

Ajax Amsterdam

1 players • €15.0M

AZ Alkmaar

3 players • €11.2M

NEC Nijmegen

2 players • €6.0M

FC Groningen

3 players • €4.7M

Sparta Rotterdam

1 players • €4.0M

Twente Enschede FC

2 players • €3.7M

SC Heerenveen

2 players • €3.6M

PEC Zwolle

2 players • €2.1M

#10

Feyenoord Rotterdam

1 players • €2.0M

PSV Eindhoven (3 Young Centre-Backs)

Ryan Flamingo(23yo)

€20.0M

Yarek Gasiorowski(21yo)

€10.0M

Adamo Nagalo(23yo)

€4.0M

Ajax Amsterdam (1 Young Centre-Backs)

Youri Baas(23yo)

€15.0M

AZ Alkmaar (3 Young Centre-Backs)

Wouter Goes(21yo)

€10.0M

Maxim Dekker(22yo)

€1.0M

Billy van Duijl(20yo)

€200K

NEC Nijmegen (2 Young Centre-Backs)

Ahmetcan Kaplan(23yo)

€5.0M

Brayann Pereira(22yo)

€1.0M

Player Rankings

Ranked by APE Strength Score. Click any player to view full profile, or click the chart icon to see value history.

Ryan Flamingo

PSV Eindhoven • 23 years old

€17.3M

€20.0M

+15.6%

€18.8M€24.0M

Expected: €21.4M

73.7

Youri Baas

Ajax Amsterdam • 23 years old

€13.0M

€15.0M

+15.6%

€14.1M€18.0M

Expected: €16.1M

70.1

Wouter Goes

AZ Alkmaar • 21 years old

€8.6M

€10.0M

+15.6%

€9.5M€12.5M

Expected: €11.0M

60.3

Yarek Gasiorowski

PSV Eindhoven • 21 years old

€8.6M

€10.0M

+15.6%

€9.5M€12.5M

Expected: €11.0M

60.3

Ahmetcan Kaplan

NEC Nijmegen • 23 years old

€4.3M

€5.0M

+15.6%

€4.7M€6.0M

Expected: €5.4M

52.9

Adamo Nagalo

PSV Eindhoven • 23 years old

€3.5M

€4.0M

+15.6%

€3.8M€4.8M

Expected: €4.3M

50.1

Marvin Young

Sparta Rotterdam • 20 years old

€3.5M

€4.0M

+15.6%

€4.0M€5.2M

Expected: €4.6M

48.3

Nikolai Hopland

SC Heerenveen • 21 years old

€2.6M

€3.0M

+15.6%

€2.9M€3.8M

Expected: €3.3M

41.7

Max Bruns

Twente Enschede FC • 23 years old

€2.2M

€2.5M

+15.6%

€2.4M€3.0M

Expected: €2.7M

40.6

#10

Thijmen Blokzijl

FC Groningen • 21 years old

€2.2M

€2.5M

+15.6%

€2.4M€3.1M

Expected: €2.8M

39.4

#11

Malcolm Jeng

Feyenoord Rotterdam • 21 years old

€1.7M

€2.0M

+15.6%

€1.9M€2.5M

Expected: €2.2M

36.6

#12

Dies Janse

FC Groningen • 20 years old

€1.7M

€2.0M

+15.6%

€2.0M€2.6M

Expected: €2.3M

36.0

#13

Anselmo García MacNulty

PEC Zwolle • 23 years old

€1.3M

€1.5M

+15.6%

€1.4M€1.8M

Expected: €1.6M

34.3

#14

Stav Lemkin

Twente Enschede FC • 23 years old

€1.0M

€1.2M

+15.6%

€1.1M€1.4M

Expected: €1.3M

31.5

#16

Maxim Dekker

AZ Alkmaar • 22 years old

€865K

€1.0M

+15.6%

€931K€1.2M

Expected: €1.1M

28.6

#15

Brayann Pereira

NEC Nijmegen • 22 years old

€865K

€1.0M

+15.6%

€931K€1.2M

Expected: €1.1M

28.6

#17

Casper Widell

Excelsior Rotterdam • 22 years old

€692K

€800K

+15.6%

€745K€948K

Expected: €847K

25.9

#18

Hristiyan Petrov

SC Heerenveen • 23 years old

€519K

€600K

+15.6%

€565K€719K

Expected: €642K

22.9

#19

Damian van der Haar

PEC Zwolle • 22 years old

€519K

€600K

+15.6%

€559K€711K

Expected: €635K

22.3

#20

Julius Dirksen

Go Ahead Eagles • 23 years old

€346K

€400K

+15.6%

€377K€480K

Expected: €428K

17.8

Showing 1-20 of 26

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)

PSV Eindhoven's Ryan Flamingo at 23 years old has the highest Pre-Peak Value Efficiency at 13.33×. That means Ryan Flamingo is valued 13.33× higher than the median player in the 21-23 age bracket—representing exceptional value before reaching peak age.

In second is Ajax Amsterdam's Youri Baas, who is 23 years old, with a 10.00× PPVE. Third is Wouter Goes of AZ Alkmaar, who is 21 years old with a 6.67× 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 13.33× means the player is worth 1233% more than typical players their age—making them high-value targets before they reach peak value.

PPVE by Age Bracket

Ryan FlamingoPSV Eindhoven

21-23 • 23yo13.33×

€20.0M • 1233% above median

Youri BaasAjax Amsterdam

21-23 • 23yo10.00×

€15.0M • 900% above median

Wouter GoesAZ Alkmaar

21-23 • 21yo6.67×

€10.0M • 567% above median

Yarek GasiorowskiPSV Eindhoven

21-23 • 21yo6.67×

€10.0M • 567% above median

Ahmetcan KaplanNEC Nijmegen

21-23 • 23yo3.33×

€5.0M • 233% above median

Adamo NagaloPSV Eindhoven

21-23 • 23yo2.67×

€4.0M • 167% above median

Nikolai HoplandSC Heerenveen

21-23 • 21yo2.00×

€3.0M • 100% above median

Marvin YoungSparta Rotterdam

U21 • 20yo2.00×

€4.0M • 100% above median

Max BrunsTwente Enschede FC

21-23 • 23yo1.67×

€2.5M • 67% above median

Thijmen BlokzijlFC Groningen

21-23 • 21yo1.67×

€2.5M • 67% above median

Malcolm JengFeyenoord Rotterdam

21-23 • 21yo1.33×

€2.0M • 33% above median

Anselmo García MacNultyPEC Zwolle

21-23 • 23yo1.00×

€1.5M • 0% above median

Dies JanseFC Groningen

U21 • 20yo1.00×

€2.0M • 0% above median

Stav LemkinTwente Enschede FC

21-23 • 23yo0.80×

€1.2M • -20% above median

Brayann PereiraNEC Nijmegen

21-23 • 22yo0.67×

€1.0M • -33% above median

Rank	Player	Age	Bracket	Current Value	Bracket Median	PPVE
#1	Ryan Flamingo PSV Eindhoven	23	21-23	€20.0M	€1.5M	13.33×
#2	Youri Baas Ajax Amsterdam	23	21-23	€15.0M	€1.5M	10.00×
#3	Wouter Goes AZ Alkmaar	21	21-23	€10.0M	€1.5M	6.67×
#4	Yarek Gasiorowski PSV Eindhoven	21	21-23	€10.0M	€1.5M	6.67×
#5	Ahmetcan Kaplan NEC Nijmegen	23	21-23	€5.0M	€1.5M	3.33×
#6	Adamo Nagalo PSV Eindhoven	23	21-23	€4.0M	€1.5M	2.67×
#7	Nikolai Hopland SC Heerenveen	21	21-23	€3.0M	€1.5M	2.00×
#8	Marvin Young Sparta Rotterdam	20	U21	€4.0M	€2.0M	2.00×
#9	Max Bruns Twente Enschede FC	23	21-23	€2.5M	€1.5M	1.67×
#10	Thijmen Blokzijl FC Groningen	21	21-23	€2.5M	€1.5M	1.67×
#11	Malcolm Jeng Feyenoord Rotterdam	21	21-23	€2.0M	€1.5M	1.33×
#12	Anselmo García MacNulty PEC Zwolle	23	21-23	€1.5M	€1.5M	1.00×
#13	Dies Janse FC Groningen	20	U21	€2.0M	€2.0M	1.00×
#14	Stav Lemkin Twente Enschede FC	23	21-23	€1.2M	€1.5M	0.80×
#15	Brayann Pereira NEC Nijmegen	22	21-23	€1.0M	€1.5M	0.67×
#16	Maxim Dekker AZ Alkmaar	22	21-23	€1.0M	€1.5M	0.67×
#17	Casper Widell Excelsior Rotterdam	22	21-23	€800K	€1.5M	0.53×
#18	Hristiyan Petrov SC Heerenveen	23	21-23	€600K	€1.5M	0.40×
#19	Damian van der Haar PEC Zwolle	22	21-23	€600K	€1.5M	0.40×
#20	Julius Dirksen Go Ahead Eagles	23	21-23	€400K	€1.5M	0.27×

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)

FC Groningen's Dies Janse at 20 years old has the highest Return-to-Peak Potential at +35%. That means Marvin Young is projected to appreciate 35% as they reach their peak age in 6 years—representing significant upside before entering their prime.

In second is Sparta Rotterdam's Marvin Young, who is 20 years old, with a +35% RPP (6 years to peak). Third is Billy van Duijl of AZ Alkmaar, who is 20 years old with a +35% RPP (6 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 35% RPP means the player is expected to gain 35% value as they enter their prime—making them excellent growth investments.

Recovery Potential by Player

Dies JanseFC Groningen

6yr to peak+35%

€2.0M → €3.1M

Marvin YoungSparta Rotterdam

6yr to peak+35%

€4.0M → €6.2M

Billy van DuijlAZ Alkmaar

6yr to peak+35%

€200K → €309K

Sven BoulandFC Groningen

6yr to peak+35%

€150K → €232K

Malcolm JengFeyenoord Rotterdam

5yr to peak+30%

€2.0M → €2.9M

Wouter GoesAZ Alkmaar

5yr to peak+30%

€10.0M → €14.4M

Thijmen BlokzijlFC Groningen

5yr to peak+30%

€2.5M → €3.6M

Yarek GasiorowskiPSV Eindhoven

5yr to peak+30%

€10.0M → €14.4M

Nikolai HoplandSC Heerenveen

5yr to peak+30%

€3.0M → €4.3M

Brayann PereiraNEC Nijmegen

4yr to peak+25%

€1.0M → €1.3M

Damian van der HaarPEC Zwolle

4yr to peak+25%

€600K → €802K

Maxim DekkerAZ Alkmaar

4yr to peak+25%

€1.0M → €1.3M

Justin HubnerFortuna Sittard

4yr to peak+25%

€300K → €401K

Giovanni van ZwamGo Ahead Eagles

4yr to peak+25%

€300K → €401K

Casper WidellExcelsior Rotterdam

4yr to peak+25%

€800K → €1.1M

Rank	Player	Age	Years to Peak	Current	Peak Forecast	RPP %
#1	Dies Janse FC Groningen	20	6	€2.0M	€3.1M	+35%
#2	Marvin Young Sparta Rotterdam	20	6	€4.0M	€6.2M	+35%
#3	Billy van Duijl AZ Alkmaar	20	6	€200K	€309K	+35%
#4	Sven Bouland FC Groningen	20	6	€150K	€232K	+35%
#5	Malcolm Jeng Feyenoord Rotterdam	21	5	€2.0M	€2.9M	+30%
#6	Wouter Goes AZ Alkmaar	21	5	€10.0M	€14.4M	+30%
#7	Thijmen Blokzijl FC Groningen	21	5	€2.5M	€3.6M	+30%
#8	Yarek Gasiorowski PSV Eindhoven	21	5	€10.0M	€14.4M	+30%
#9	Nikolai Hopland SC Heerenveen	21	5	€3.0M	€4.3M	+30%
#10	Brayann Pereira NEC Nijmegen	22	4	€1.0M	€1.3M	+25%
#11	Damian van der Haar PEC Zwolle	22	4	€600K	€802K	+25%
#12	Maxim Dekker AZ Alkmaar	22	4	€1.0M	€1.3M	+25%
#13	Justin Hubner Fortuna Sittard	22	4	€300K	€401K	+25%
#14	Giovanni van Zwam Go Ahead Eagles	22	4	€300K	€401K	+25%
#15	Casper Widell Excelsior Rotterdam	22	4	€800K	€1.1M	+25%
#16	Lewis Schouten Excelsior Rotterdam	22	4	€400K	€535K	+25%
#17	Anselmo García MacNulty PEC Zwolle	23	3	€1.5M	€1.9M	+20%
#18	Ryan Flamingo PSV Eindhoven	23	3	€20.0M	€24.9M	+20%
#19	Max Bruns Twente Enschede FC	23	3	€2.5M	€3.1M	+20%
#20	Hristiyan Petrov SC Heerenveen	23	3	€600K	€746K	+20%

Risk-Adjusted Upside (RAU)

Upside potential weighted against forecast uncertainty. Higher RAU = better risk-reward profile.

Understanding Risk-Adjusted Upside (RAU)

FC Groningen's Dies Janse has the highest Risk-Adjusted Upside at 46.3. That means Marvin Young has 15% upside potential with only 0% forecast uncertainty—representing excellent risk-reward for value appreciation.

In second is Sparta Rotterdam's Marvin Young with a 46.3 RAU (15% upside, 0% uncertainty). Third is Sven Bouland of FC Groningen with a 46.3 RAU (15% upside, 0% uncertainty).

How RAU is calculated: RAU divides upside potential by forecast uncertainty (RAU = Upside % ÷ Uncertainty %). A RAU of 46.3 means the upside is 46.3× greater than the uncertainty—making it a high-confidence growth opportunity. Target RAU ≥2.0 for balanced risk-reward.

Risk-Adjusted Upside by Player

Dies JanseFC Groningen

↑15% / ±0%46.3

Range: €2.0M - €2.6M

Marvin YoungSparta Rotterdam

↑15% / ±0%46.3

Range: €4.0M - €5.2M

Sven BoulandFC Groningen

↑15% / ±0%46.3

Range: €148K - €196K

Billy van DuijlAZ Alkmaar

↑15% / ±0%46.3

Range: €198K - €261K

Wouter GoesAZ Alkmaar

↑10% / ±0%33.7

Range: €9.5M - €12.5M

Thijmen BlokzijlFC Groningen

↑10% / ±0%33.7

Range: €2.4M - €3.1M

Nikolai HoplandSC Heerenveen

↑10% / ±0%33.7

Range: €2.9M - €3.8M

Yarek GasiorowskiPSV Eindhoven

↑10% / ±0%33.7

Range: €9.5M - €12.5M

Malcolm JengFeyenoord Rotterdam

↑10% / ±0%33.7

Range: €1.9M - €2.5M

Silvinho EsajasFC Volendam

↑7% / ±0%27.5

Range: €236K - €300K

Adamo NagaloPSV Eindhoven

↑7% / ±0%27.5

Range: €3.8M - €4.8M

Youri BaasAjax Amsterdam

↑7% / ±0%27.5

Range: €14.1M - €18.0M

Hristiyan PetrovSC Heerenveen

↑7% / ±0%27.5

Range: €565K - €719K

Stav LemkinTwente Enschede FC

↑7% / ±0%27.5

Range: €1.1M - €1.4M

Ryan FlamingoPSV Eindhoven

↑7% / ±0%27.5

Range: €18.8M - €24.0M

Rank	Player	Expected	Range	Upside %	RAU
#1	Dies Janse FC Groningen	€2.3M	€2.0M-2.6M	+15%	46.3
#2	Marvin Young Sparta Rotterdam	€4.6M	€4.0M-5.2M	+15%	46.3
#3	Sven Bouland FC Groningen	€172K	€148K-196K	+15%	46.3
#4	Billy van Duijl AZ Alkmaar	€229K	€198K-261K	+15%	46.3
#5	Wouter Goes AZ Alkmaar	€11.0M	€9.5M-12.5M	+10%	33.7
#6	Thijmen Blokzijl FC Groningen	€2.8M	€2.4M-3.1M	+10%	33.7
#7	Nikolai Hopland SC Heerenveen	€3.3M	€2.9M-3.8M	+10%	33.7
#8	Yarek Gasiorowski PSV Eindhoven	€11.0M	€9.5M-12.5M	+10%	33.7
#9	Malcolm Jeng Feyenoord Rotterdam	€2.2M	€1.9M-2.5M	+10%	33.7
#10	Silvinho Esajas FC Volendam	€268K	€236K-300K	+7%	27.5
#11	Adamo Nagalo PSV Eindhoven	€4.3M	€3.8M-4.8M	+7%	27.5
#12	Youri Baas Ajax Amsterdam	€16.1M	€14.1M-18.0M	+7%	27.5
#13	Hristiyan Petrov SC Heerenveen	€642K	€565K-719K	+7%	27.5
#14	Stav Lemkin Twente Enschede FC	€1.3M	€1.1M-1.4M	+7%	27.5
#15	Ryan Flamingo PSV Eindhoven	€21.4M	€18.8M-24.0M	+7%	27.5
#16	Max Bruns Twente Enschede FC	€2.7M	€2.4M-3.0M	+7%	27.5
#17	Ahmetcan Kaplan NEC Nijmegen	€5.4M	€4.7M-6.0M	+7%	27.5
#18	Anselmo García MacNulty PEC Zwolle	€1.6M	€1.4M-1.8M	+7%	27.5
#19	Julius Dirksen Go Ahead Eagles	€428K	€377K-480K	+7%	27.5
#20	Damian van der Haar PEC Zwolle	€635K	€559K-711K	+6%	23.0

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 centre-back position shows strong depth (avg Z-score: 0.00). RPI: 0.00.

Position Depth Analysis

Total Players

0.00

Avg Z-Score

0.00

RPI Score

Weak DepthStrong Depth

-3.00+3.0

Highest Z-Scores

Ryan Flamingo+3.41

Youri Baas+2.38

Wouter Goes+1.35

Yarek Gasiorowski+1.35

Ahmetcan Kaplan+0.33

Lowest Z-Scores

Sven Bouland-0.67

Billy van Duijl-0.66

Silvinho Esajas-0.65

Justin Hubner-0.64

Giovanni van Zwam-0.64

Age-Share Concentration (ASC)

Identifies players capturing disproportionate value relative to age group representation. Positive ASC = value concentration.

Understanding Age-Share Concentration (ASC)

Feyenoord Rotterdam's Malcolm Jeng in the 21-23 age bracket has the highest Age-Share Concentration at +8.2%. That means Ryan Flamingo captures 92.8% of total market value while representing only 84.6% of players in their age group—showing dominant elite status.

In second is Ajax Amsterdam's Youri Baas with a +8.2% ASC (92.8% value share vs 84.6% player share in 21-23 bracket). Third is Julius Dirksen of Go Ahead Eagles with a +8.2% ASC (92.8% value vs 84.6% players in 21-23 bracket).

How ASC is calculated: ASC = (% of total value) - (% of total players) in age bracket. A +8.2% ASC means the player captures 8.2% more market value than their numerical representation—indicating marquee status. ASC > +15% = elite dominance, ASC < -15% = potential value targets.