Keith Vaverchak
UMPIRE · BIG TENumpire · Big Ten · 39 games since 2022
Worked MSU 37–38 ILL in week 6.
Games since '22Games since '22
395 in 20265 in 2026
Flags / g 2026Flags / g · 2026
12.6— · LG 12.7— pctl · league 12.7
Acc. yds / gAcc. yds / g
110LG 111League 111
Judgment shareJudgment share
54%LG 60%League 60%
Home cookingHome cooking · raw
−1.0Raw · under 8 GNo read under 8 games
Late whistleLate whistle
—Under 8 gamesUnder 8 games
Game lengthGame length
3:22LG 3:24League 3:24
Flag profile
Per game · | = leagueJ = judgment · P = procedural · + 0.0 other / g · Career, 39 G
Leans
Flags over expected / g0 LEANS IN 40 SPLITS · ~2 EXPECTED BY LUCK · + = OPPONENT FLAGGED MORE
Crew history
39 gamesYear | Crew · position | G | Flags/g |
|---|---|---|---|
| 2026 | Big Ten · umpire | 5 | 12.6 |
| 2025 | Big Ten · umpire | 8 | 9.5 |
| 2024 | Big Ten · umpire | 10 | 7.2 |
| 2023 | Big Ten · umpire | 7 | 7.6 |
| 2022 | MAC · umpire | 9 | 10.3 |
Replay reviews
Since 2025 · 13 GReviews, 0.9/g
Overturned · 5
Of replay
Longest: ≈ 4:00, first down upheld · 2026 wk 1, Western Michigan at
Michigan
■ Overturned · review time = gap to next snap − game median
Flags / g = accepted penalties, games worked · Late whistle = 4th-q one-score judgment flags / play ÷ rest of game
Flags / g = accepted penalties · Home cooking = FOE on visitor − FOE on home, judgment flags only · Late whistle = 4th-q one-score judgment flags / play ÷ rest of game
Lean = pooled estimate whose 90% interval misses 0 with ≥ 8 G · shrunk toward 0 · judgment flags only · permutation luck check, 1,000 shuffles
Lean = pooled estimate whose 90% interval misses 0 with ≥ 8 G · shrunk toward 0 · luck check = 1,000 shuffles · source: school box scores · Updated Fri 10:07 AM ET
Source: school box scores · Updated Fri 10:07 AM ET