What a second-half bet is
A second-half total or spread counts only what happens after halftime. A second-half over 70.5 needs 71 or more combined points scored in the second half (and, at most books, overtime). The first-half score doesn't count toward it.
The window
College basketball halftime is short, and the markets often open a few minutes into the break and close when the second half starts. That leaves little time to compare books, so have your accounts funded and logged in before the game.
House rules
- Check whether second-half markets include overtime at your book (most do).
- Prices can change quickly; confirm the number on your bet slip before you submit.
- Some books suspend markets briefly as the second half begins; a bet may be rejected if the line moves.
Bet the number, not the moment
It's easy to react to the first half you just watched. Lines already reflect the score and the clock, so a dramatic half isn't a reason on its own. Use the same rules as any bet: a number you're willing to take (a playable-to number), a size in units, and a pass when the price isn't there.
Don't chase
Halftime is a common moment to try to win back a first-half loss. Keep second-half bets inside your normal unit size, and skip them entirely if you're betting to get even (responsible gambling).