Referee
Robert Hartmann averages 2.0 cards/match across 8 games
Compare this referee →8
Matches
2.00
Cards / match
▼ Falling
1.88
Yellows / match
▼ Falling
0.00
Reds / match
0.13
Y→R / match
1.50
Cards · home team
avg / match
0.50
Cards · away team
avg / match
Match environment
24.4
Fouls / match
1.00
Penalties / match
Based on 8 games
1.3
VAR moments / match
Fouls and penalties are sourced from fixture event data where available.
Team breakdown · cards issued per team
Positive delta = more cards than this referee's usual average. Red highlight = potential bias signal.
| Team | Games | Avg Y | Δ vs avg | H/A | |||
|---|---|---|---|---|---|---|---|
| FC Union Berlin | 2 | 4 | 0 | 0 | 2.00 | +0.12 | 2H 0A |
Recent matches
| Date | Match | League | Total | ||
|---|---|---|---|---|---|
| 2026-03-07 | ? vs ? | Bundesliga | — | — | 0 |
| 2026-01-24 | FC Union Berlin vs Borussia Dortmund | Bundesliga | 1 | — | 1 |
| 2026-01-14 |
About these stats: Cards include yellows, straight reds, and yellow→red dismissals from synced match events. Fouls and penalties are sourced from fixture event data where available (shown in Match environment). Numbers refresh approximately hourly. Trend signals require 6+ appearances in the active scope.
| St. Pauli | 1 | 4 | 0 | 0 | 4.00 | +2.12 | 1H 0A |
| FSV Mainz 05 | 1 | 3 | 0 | 0 | 3.00 | +1.12 | 0H 1A |
| VfL Wolfsburg | 1 | 2 | 0 | 0 | 2.00 | +0.12 | 1H 0A |
| Borussia Dortmund | 1 | 1 | 0 | 0 | 1.00 | -0.88 | 0H 1A |
| Werder Bremen | 1 | 1 | 0 | 1 | 1.00 | -0.88 | 1H 0A |
| Borussia Mönchengladbach | 1 | 0 | 0 | 0 | 0.00 | -1.88 | 0H 1A |
| RB Leipzig | 1 | 0 | 0 | 0 | 0.00 | -1.88 | 1H 0A |
Yellow Red Yellow→Red Δ vs avg = team avg yellows vs referee's overall avg
| RB Leipzig vs ? |
| Bundesliga |
| — |
| — |
| 0 |
| 2025-12-14 | Werder Bremen vs ? | Bundesliga | 1 | 1 | 2 |
| 2025-11-22 | VfL Wolfsburg vs ? | Bundesliga | 2 | — | 2 |
| 2025-11-01 | St. Pauli vs Borussia Mönchengladbach | Bundesliga | 4 | — | 4 |
| 2025-10-05 | ? vs FSV Mainz 05 | Bundesliga | 3 | — | 3 |
| 2025-08-23 | FC Union Berlin vs ? | Bundesliga | 4 | — | 4 |