Overtime and extra innings — what counts in your bet
"Does overtime count?" sounds like a yes-or-no question. It is a market question.
Two wagers on the same game can settle differently because one covers the full event and the other covers regulation only. The mistake is assuming the sport decides. The ticket decides.
Full-game markets
Many standard two-way full-game sides and totals include overtime or extra periods when the market is labeled as the full game. That keeps the market binary: one side wins.
But do not turn "many" into "always." The market label and house rules control.
Regulation markets
A regulation market stops at the end of the scheduled regulation period.
In hockey, a regulation three-way line can offer home, draw, or away after 60 minutes. Overtime does not rescue a home or away regulation ticket that was tied after 60.
That is a different product from the ordinary moneyline that resolves after overtime or a shootout under the book's rules.
Soccer has its own language
A standard 1X2 market is commonly tied to regulation plus stoppage time, not tournament extra time, unless explicitly stated otherwise.
Knockout matches create the trap: "to qualify" and "match winner" can be completely different markets even though both seem to ask who wins.
Again: read the contract.
Totals and props
Full-game totals can include overtime when the market says they do. Quarter, period, half, and regulation-only totals obviously stop earlier.
Player props can be trickier. A basketball player's overtime minutes may count in a full-game prop while a first-half prop has already settled.
That extra period increases opportunity and variance. It is part of the distribution you priced if the market includes it.
Why this matters before the bet
Suppose you project an NBA game at 228 points in regulation and the market total is 227.5 including overtime.
Your edge is not simply 0.5 points. The posted market includes a small probability of additional possessions beyond regulation. Your model needs to speak the same language as the market.
A projection and a betting line are only comparable when they cover the same event scope.
The rule to carry
Before comparing your number to the book, match four things:
sport, time window, overtime treatment, settlement rule.
A perfect model on the wrong scope is still the wrong model.