Duke Blue Devils

How the Blue Devils play under each referee

Every Blue Devils game grouped by individual referee. Over this sample the Blue Devils are 169-43 (79.7%); each ref win rate below is compared to that team average.

Updated Aug 22, 2026, 9:10 p.m.·2020-2026 (2020-11-28 – 2026-03-29)

Blue Devils record: 169-43 (79.7%)

Officials with enough games overlap across crews; combined team-official games (454) exceed 212 unique team matches. Table lists refs with 8+ games.

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Mark Schnur
+20.3 pts vs team-3.0
Justin Porterfield
+20.3 pts vs team-3.0
Tommy Morrissey
+15.3 pts vs team-2.0
Tony Henderson
+14.1 pts vs team-0.7
Lee Cassell
+10.3 pts vs team-1.4
A.J. Desai
+10.3 pts vs team-1.3
Raymie Styons
+7.8 pts vs team-1.6
Jamie Luckie
+6.0 pts vs team-1.6
Tony Chiazza
+3.6 pts vs team-0.7
John Gaffney
+2.9 pts vs team-0.1
Bill Covington Jr.
+2.7 pts vs team-1.9
Bert Smith
+2.1 pts vs team-2.3
Roger Ayers
-0.2 pts vs team-0.9
Clarence Armstrong
-1.1 pts vs team-0.2
Tim Clougherty
-4.7 pts vs team-0.7
Ted Valentine
-5.8 pts vs team-0.2
Pat Driscoll
-7.0 pts vs team-1.2
Ron Groover
-8.6 pts vs team-0.3
Doug Shows
-13.0 pts vs team-0.6
Brent Hampton
-13.0 pts vs team+2.9
Brian O'Connell
-15.0 pts vs team+1.3
Brian Dorsey
-17.2 pts vs team+1.5
Jeffrey Anderson
-17.2 pts vs team+0.3
Keith Kimble
-22.6 pts vs team-1.3
Kipp Kissinger
-25.2 pts vs team-2.3

Tight-game proxy

How Duke Blue Devils compares in tight final-margin games vs the full sample. Based on official box scores, not last-two-minute reports.

Close games (≤5 pt margin)

50 of 212 games match this window

Avg combined points
Tight-game avg
146.5
Season avg
144.4
Pressure impact
+2.1
Avg fouls
Tight-game avg
32.5
Season avg
31.9
Pressure impact
+0.6
Over rate
Tight-game avg
52.0%
Season avg
46.2%
Pressure impact
+5.8 pp

Over benchmark: 145.3 combined points · Seasons: 2020-21, 2021-22, 2022-23, 2023-24, 2024-25, 2025-26 · 212 total games in sample

Pregame toss-ups (spread ≤5.5)

What am I looking at?

Individual refs: stats for one official across all Blue Devils games they worked, even with different partners.
Team baseline: the Blue Devils went 169-43 (79.7%) across this sample. Ref win rates show how they compare to that team average.
Whistle differential: who gets called more. A positive number means opponents are whistled more often than the Blue Devils.

Scores, fouls, and referee crews from ESPN (9885 games across 80 tracked programs, 6047 with sportsbook totals). Coverage: 2020-21, 2021-22, 2022-23, 2023-24, 2024-25, 2025-26. Matrix: 4078/8349 ref×team pairs with 3+ games. 69 games skipped (no officials listed). 0 games skipped (outside live conference gate). Ref game counts rebuilt from DISTINCT game_id in game logs.