About RefMetrics

RefMetrics brings referee and umpire assignments together with historical game records. It helps fans, officials, researchers, and media explore who worked a game and understand the context behind officiating statistics.

Coverage across sports

Explore professional and college basketball, NFL and NCAA football, MLB baseball, and NHL hockey. Coverage varies by league, season, and field: a recorded game does not always include a complete crew or every statistic.

• NBA
• WNBA
• G League
• NCAA Men's Basketball
• NCAA Women's Basketball
• NCAA Men's Division II
• NCAA Women's Division II
• NFL
• NCAA Football
• MLB
• NHL

Context before conclusions

Game outcomes describe games involving an officiating crew. They do not establish which official made every call, whether a decision was correct, or what caused a result. Historical patterns should be read with their sample size, coverage, and selected filters.

Read our coverage and methodology guide for definitions, missing-data treatment, and the limits of these comparisons.

Questions and corrections

The RefMetrics team maintains the site and reviews reported issues. If you spot a misspelled name, an incorrect identity, or a missing assignment, contact us with the page URL, league, date, and details that will help us check the record. Similar names can belong to different officials.

Public pages provide an introduction and selected examples. Account and subscription access unlock additional statistics as described on our plans page.