Eredivisie

Seiya Maikuma

Seiya Maikuma, 28, from Japan ➤ AZ Alkmaar, since 2024 ➤ Right-Back ➤ Market value: €2.00m ➤ * 16/10/1997 in ---, Nagasaki, Japan

AZ AlkmaarDefender - Right-Back28 years€2.00m
Seiya Maikuma

Info

Biographical card, current club and contract facts. Empty fields mean the source did not publish that value.

Position
Defender - Right-Back
Shirt
#2
Age
28
Date of birth
16/10/1997
Height
1,79m
Foot
right
Citizenship
Japan
Joined
01/07/2024
Contract until
30/06/2028
Market value
€2.00m
Career fees
€800k
Youth clubs
Kurokami FC Jr, JFC Rainbow Nagasaki, FC Bristol U15, Higashi Fukuoka HS, Momoyama Gakuin University

Statistics

Career totals from Transfermarkt: this season, then by competition and by club. Minutes and cards appear when the source recorded them.

This season

SeasonCompetitionAppsMinGAYCRC
26/27Eredivisie4440000
26/27Johan Cruijff Schaal1190000

By competition

CompetitionAppsGA
J1 League7446
J2 League74613
Eredivisie3701
J. League Cup1621
Europa League1222
Emperor's Cup620
KNVB Beker500
Conference League200
Play-Offs Conference League201
Johan Cruijff Schaal100
UECL Qualifying000

By club

ClubAppsGA
Cerezo Osaka9577
V-V. Nagasaki75713
AZ Alkmaar5924

Transfers

Recorded moves between clubs, with fee and market value on the day of the deal when the source has them.

DateSeasonFromToFeeMarket value
01/07/202424/25Cerezo OsakaAZ Alkmaar€800k€1.50m
09/01/202221/22V-V. NagasakiCerezo Osakafree transfer€450k
01/02/202019/20Momoyama Gak.V-V. Nagasakifree transfer-
01/04/201615/16Hig. Fukuoka HSMomoyama Gak.free transfer-

National

Senior and youth national-team spells: caps, goals, shirt number and whether the player is still in the current pool.

TeamCapsGoalsShirtDebutStatus
Japan80162023-09-12Former international

Market value

Current and peak Transfermarkt valuations, plus the history of changes by club and age. Rankings are relative to the current squad, league and position group.

Current
€2.00m
Highest
€4.00m · 28/05/2025
Last change
28/05/2026
AZ Alkmaar 18Eredivisie 134Japan 51Right-Back 317Worldwide 4.777Year 1997 368
DateAgeClubValue
27/01/202123V-Varen Nagasaki€300k
28/06/202123V-Varen Nagasaki€450k
14/01/202224Cerezo Osaka€650k
28/06/202224Cerezo Osaka€750k
06/01/202325Cerezo Osaka€900k
28/06/202325Cerezo Osaka€1.00m
09/01/202426Cerezo Osaka€1.30m
12/06/202426Cerezo Osaka€1.50m
14/10/202426AZ Alkmaar€3.00m
17/12/202427AZ Alkmaar€3.00m
28/05/202527AZ Alkmaar€4.00m
02/12/202528AZ Alkmaar€3.00m
28/05/202628AZ Alkmaar€2.00m

xG Statistics

Seiya Maikuma is not yet matched to an Understat player model, so there are no xG rows. When the mapping appears, this block will show appearances, minutes, goals, xG, npxG, assists, xA, shots, key passes and xGChain for each available season.

Understat has no season rows for this player yet.

What the columns mean

Read this table as chance quality, not as a scoreboard. A player can outscore xG (finishing well) or lag behind it (missed sitters). Compare rows only when minutes are in the same range.

Apps · Appearances
Matches in which the player was used in this league season, including substitute minutes.
Min · Minutes
Total minutes on the pitch. Useful when comparing output: 1 goal in 90 minutes is not the same as 1 goal in 800.
G · Goals
Goals credited to the player in the Understat shot model for that season.
xG · Expected goals
The quality of shots the player took, expressed as the number of goals an average finisher would score from the same chances. A 0.30 xG shot is a chance that goes in about 3 times in 10.
npxG · Non-penalty xG
Expected goals with penalties removed. This is the cleaner read of open-play and set-piece finishing, because a penalty is usually ~0.76 xG by itself.
A · Assists
Goals that followed the player's last pass. Actual assists, not the model.
xA · Expected assists
The xG value of shots that came directly from the player's key passes. High xA with few assists usually means teammates missed good chances.
Sh · Shots
Total shots recorded by Understat, including blocked and off-target attempts.
KP · Key passes
Passes that led to a shot. This is the volume behind xA.
xGChain · xG chain
Team xG from possessions the player touched. It captures involvement in build-up, not only the shot or the last pass. A midfielder who starts attacks can rank high here without scoring.
xGBuildup · xG buildup
The same possession xG, but excluding the shot-taker and the assist. This is the purest 'how much did this player help create the chance before the final ball' number.
NPG · Non-penalty goals
Goals scored from open play or set pieces, excluding penalties.

Teammates