<P> The tiebreaker gave tennis a definite "finish line". </P> <Dl> <Dd> In what follows, the "final set" means the fifth set for best - of - five matches, and the third set for best - of - three matches . </Dd> </Dl> <Dd> In what follows, the "final set" means the fifth set for best - of - five matches, and the third set for best - of - three matches . </Dd> <P> In 1971, the nine - point tiebreaker was introduced at Wimbledon (the first scoring change at Wimbledon in 94 years). </P>

How does the tie breaker work in tennis