To decide a winner by playing a further round or more holes in a competition that is tied.

set into opposition or rivalry; "let them match their best athletes against ours"; "pit a chess player against the Russian champion"; "He plays his two children off against each other"

To determine a winner in a tie match by playing further holes or a further round.

A tie breaker.

To play further holes or another round in order to determine the winner of a tie match.