JapanMatches analysed: 592023–2026Koei Koya · J1 League: referee stats
Koei Koya (Japan) has shown 2.95 cards per game in 59 analysed matches — +7% compared with the average of the same leagues. Profile: strict.
Strict · +7%Upcoming matches with Koei Koya
Referee radar
Percentile among 2954 referees with at least 15 matches; 50 = typical referee. Each axis compares the referee with the average of the leagues where this referee officiates.
Cards per match (last 20 matches)
Last matches refereed by Koei Koya
| Date | Match | Score | Cards (home–away) | Fouls | Pen. |
|---|---|---|---|---|---|
| Sat 19 Sept | Yokohama F. Marinos – Mito HollyhockJ1 League | 2:0 | 5 | 17 | 0 |
| Sat 29 Aug | Kyoto Sanga – Avispa FukuokaJ1 League | 2:1 | 4 | 18 | 0 |
| Sat 15 Aug | JEF United Chiba – Machida ZelviaJ1 League | 0:4 | 3 | 29 | 0 |
| Sat 6 Jun | JEF United Chiba – Avispa FukuokaJ1 League | 1:2 | 0 | 27 | 1 |
| Sun 31 May | Shimizu S-pulse – Yokohama F. MarinosJ1 League | 1:1 | 1 | 24 | 0 |
| Sun 10 May | Shimizu S-pulse – Avispa FukuokaJ1 League | 1:1 | 5 | 20 | 0 |
| Sun 3 May | V-varen Nagasaki – Nagoya GrampusJ1 League | 1:2 | 1 | 15 | 0 |
| Sat 25 Apr | Urawa – Yokohama F. MarinosJ1 League | 2:3 | 2 | 22 | 0 |
| Sat 11 Apr | Sanfrecce Hiroshima – Shimizu S-pulseJ1 League | 1:1 | 1 | 18 | 0 |
| Sat 4 Apr | Mito Hollyhock – KashimaJ1 League | 1:1 | 6 | 15 | 1 |
| Sun 22 Mar | Cerezo Osaka – Vissel KobeJ1 League | 1:1 | 3 | 19 | 0 |
| Sat 14 Mar | Kashiwa Reysol – Machida ZelviaJ1 League | 0:1 | 2 | 19 | 0 |
| Sat 7 Mar | FC Tokyo – Yokohama F. MarinosJ1 League | 3:0 | 2 | 25 | 0 |
| Sat 28 Feb | Urawa – KashimaJ1 League | 2:3 | 2 | 27 | 1 |
| Sat 21 Feb | Shimizu S-pulse – Vissel KobeJ1 League | 1:0 | 6 | 22 | 1 |
How the numbers are calculated
Cards = yellow and red cards shown to players during 90 minutes (a second yellow counts as a yellow plus a red, as most bookmakers settle). Cards for coaches and substitutes on the bench and cards in extra time are excluded. Penalties = penalties awarded during the match (shoot-outs excluded). “vs league” compares the referee with the average of the exact league seasons this referee worked, so a referee from a card-heavy league is not called strict just because of the league.
Data: official match events and statistics (API-Sports), updated daily.
Frequently asked questions
How many cards does Koei Koya give per game?
On average 2.95 cards per game in 59 analysed matches (league average in the same competitions: 2.70).
Is Koei Koya a strict referee?
Compared with the leagues where Koei Koya officiates, the card count is +7% – profile: strict. A red card appeared in 12% of these matches.
How often do matches with Koei Koya go over 4.5 cards?
Over 4.5 cards in 17% of matches and over 3.5 cards in 41%. Both teams were booked in 66%.
Does Koei Koya give many penalties?
A penalty was awarded in 20% of matches refereed by Koei Koya.