Most Lopsided Rivalries in Sports History
The biggest all-time leads, by winning percentage, among series with plenty of meetings. Most one-sided: Yale Bulldogs leads Wesleyan (CT) 46-0, winning 100.0% of 46 meetings (College Football).
How this list works
Series with at least 20 meetings (15 in college football), ranked by the leader's winning percentage (a tie counts as half a win), then by the number of games. Every league's rows compete for the same places, ranked by the same number.
Each row links to the full matchup page, opened on that league's numbers. Think you know who leads a series? Try the rivalry quiz.
More head-to-head records
Records include games through Oct 27, 2026.
Sources
Records are computed from every final game result in the Matchup Index database. About the data.