Referee profile
Koei Koya
- Matches officiated
- 105 career total (source)
- Yellow cards / match
- 2.45 257 yellow in total
- Reds / match
- 0.11 4 red · 8 second yellow
- Yellow / match, recent
- 2.58 12 matches · red 0.08
Last 12 months
22 matches since 2 Nov 2025, compared with the average referee
| Metric | Koei Koya | Average | Difference from average |
|---|---|---|---|
| Yellow cards / match | 2.68 | 3.99 | −33% |
| Red cards / match | 0.23 | 0.21 | +8% |
| Penalty goals / match | 0.23 | 0.23 | 0% |
| Goals / match | 2.82 | 2.78 | +1% |
| Home wins | 32% | 44% | −27% |
| Draws | 36% | 25% | +44% |
Ranked 1062 of 1117 referees for yellow cards (1 = strictest).
Match results
By league
-
1
J1 League 2.82 goals · 2.68 yellows / match
22 matches
The data source is currently unreachable.
Cards per match
Recent matches (oldest to newest); the dashed line is the career average. Click a bar to open the match.
Yellow cardsRed cardsCareer avg.
League breakdown
Competitions of the last 12 matches
J1 League
Recent matches
FT
31 Oct
Mito Hollyhock
Sanfrecce Hiroshima
0
3
Mito Hollyhock
Sanfrecce Hiroshima
0
3
J1 League
1
1
FT
25 Oct
Cerezo Osaka
JEF United Chiba
2
2
Cerezo Osaka
JEF United Chiba
2
2
J1 League
5
0
FT
21 Oct
Yokohama F. Marinos
Tokyo Verdy
2
2
Yokohama F. Marinos
Tokyo Verdy
2
2
J1 League
2
0
FT
17 Oct
Sanfrecce Hiroshima
Kyoto Sanga FC
3
0
Sanfrecce Hiroshima
Kyoto Sanga FC
3
0
J1 League
2
0
FT
19 Sep
Yokohama F. Marinos
Mito Hollyhock
2
0
Yokohama F. Marinos
Mito Hollyhock
2
0
J1 League
5
0
FT
6 Sep
Vissel Kobe
V-Varen Nagasaki
3
1
Vissel Kobe
V-Varen Nagasaki
3
1
J1 League
2
0
FT
29 Aug
Kyoto Sanga FC
Fukuoka
2
1
Kyoto Sanga FC
Fukuoka
2
1
J1 League
4
0
FT
15 Aug
JEF United Chiba
Machida Zelvia
0
4
JEF United Chiba
Machida Zelvia
0
4
J1 League
3
0
FT
6 Jun
JEF United Chiba
Fukuoka
1
2
JEF United Chiba
Fukuoka
1
2
J1 League
0
0
FT
31 May
Shimizu S-Pulse
Yokohama F. Marinos
1
1
Shimizu S-Pulse
Yokohama F. Marinos
1
1
J1 League
1
0
FT
10 May
Shimizu S-Pulse
Fukuoka
1(4)
1(3)
Shimizu S-Pulse
Fukuoka
1(4)
1(3)
J1 League
5
0
FT
3 May
V-Varen Nagasaki
Nagoya Grampus
1
2
V-Varen Nagasaki
Nagoya Grampus
1
2
J1 League
1
0