If you just make a straight wager on a match it ends when regulation ends. For instance, if you bet a Champions League final and had Athletico Madrid +1 against Real Madrid when regulation ended in a tie and the game went into extra time you were a winner.
If you had Real Madrid -1, you lost your bet. However, most sites allow you to bet what happens in extra time, or you could have bet the Real Madrid will “Raise the Cup’’ which means all that team has to do is eventually win the match be it in regulation, extra time or during penalties.
The difference in betting that way is the odds are usually not in your favor. Instead of getting money of line of -115 on Real Madrid, if you bet them to “Raise the Cup’’ the money line would be anywhere from -280 to -350. Meaning you would wager that much (either $280 to $350) to win $100.