JapanMatches analysed: 1002023–2026Koei Koya: referee stats
Koei Koya (Japan) has shown 2.53 cards per game in 100 analysed matches — −4% compared with the average of the same leagues. Profile: average.
Average · −4%Upcoming matches with Koei Koya
Referee radar
Percentile among 3039 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)
Koei Koya by competition
| Competition | Matches | Cards/g | League avg | vs league | Penalty | Red card |
|---|---|---|---|---|---|---|
 J1 League | 64 | 2.91 | 2.74 | +5% | 19% | 13% |
| J2 League | 16 | 1.94 | 2.59 | −12% | 6% | 0% |
| J-League Cup | 11 | 2.09 | 2.71 | −9% | 0% | 9% |
| Emperor Cup | 9 | 1.44 | 2.15 | −10% | 0% | 11% |
Last matches refereed by Koei Koya
| Date | Match | Score | Cards (home–away) | Fouls | Pen. |
|---|---|---|---|---|---|
| Wed 11 Nov | Yokohama F. Marinos – KashimaJ-League Cup | 2:3 | 3 | 24 | 0 |
| Sun 8 Nov | Vissel Kobe – UrawaJ1 League | 2:2 | 0 | 13 | 0 |
| Sat 31 Oct | Mito Hollyhock – Sanfrecce HiroshimaJ1 League | 0:3 | 2 | 12 | 0 |
| Sun 25 Oct | Cerezo Osaka – JEF United ChibaJ1 League | 2:2 | 6 | 27 | 0 |
| Wed 21 Oct | Yokohama F. Marinos – Tokyo VerdyJ1 League | 2:2 | 2 | 31 | 0 |
| Sat 17 Oct | Sanfrecce Hiroshima – Kyoto SangaJ1 League | 3:0 | 2 | 20 | 0 |
| Sun 4 Oct | Tegevajaro Miyazaki – Omiya ArdijaJ2 League | 1:1 | 2 | 21 | 0 |
| 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 |
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 2.53 cards per game in 100 analysed matches (league average in the same competitions: 2.66).
Is Koei Koya a strict referee?
Compared with the leagues where Koei Koya officiates, the card count is −4% – profile: average. A red card appeared in 10% of these matches.
How often do matches with Koei Koya go over 4.5 cards?
Over 4.5 cards in 13% of matches and over 3.5 cards in 29%. Both teams were booked in 56%.
Does Koei Koya give many penalties?
A penalty was awarded in 13% of matches refereed by Koei Koya.