Overtime /(?)/

O·ver·time

Overtime

n.
  1. Time beyond, or in excess of, a limit; esp., extra working time.
  2. An extra period of time provided to play a game, beyond the end of the normal period allowed for the game, for the purpose of resolving a tie score; as, the team won in overtime. (Sports)

Phrases & Compounds
sudden death overtime
an overtime{2} in which the first team to score wins the game; -- contrasted with normal overtime{2}, which is a fixed period of time during which either team may score as often as they can.