If games went over or under much more often than the other, sports betting would be easy, wouldn't it?
The betting market is pretty good at creating accurate totals to split both sides 50/50.
But in most sports, games do go under slightly more often. It's not enough to beat the vig and be blindly profitable, though.
Here are over/under betting records for six major American sports in their last five seasons. It includes both the regular season and playoffs, but not the preseason.
Data is based on closing lines from Pinnacle in our Bet Labs database.
Over/Under Results Since 2019
Records listed as overs, unders, then pushes. Updated May 8, 2026
| Sport | O/U Record | Under Win % |
|---|---|---|
| NFL | 988-948-24 | 50.4% |
| NBA | 4,219-4,262-95 | 49.7% |
| MLB | 6,508-6,318-624 | 50.7% |
| NCAAF | 2,390-2,280-60 | 50.5% |
| NCAAB | 45,006-44,302-1,306 | 49.6% |
It's human nature to root for points and offensive success instead of rooting for offensive ineptitude. So the betting market tends to price totals slightly too high.
Your bet is also never technically dead when you bet an over — there's always a chance the game goes to overtime, or there's a flurry of late scoring to push it over.
Here's the over/under record for each sport since 2005.
Totals Since 2005
Records listed as overs, unders, then pushes. Updated May 8, 2026
| Sport | O/U Record | Under Win % |
|---|---|---|
| NFL | 4,255-4,106-103 | 50.3% |
| NBA | 11,244-11,132-292 | 49.6% |
| MLB | 20,356-19,842-1,214 | 51% |
| NCAAF | 5,002-4,812-144 | 50.2% |
| NCAAB | 90,001-89,903-2,000 | 50% |
