What is a tiebreak?

Many a system has been used to separate winners and losers in sporting events where a draw is unpalatable | The Economist explains

What Is A Set In A Tennis Match?

Tennis Scoring & Tiebreakers

Tennis Scoring: Points, Sets & Games, Tennis Rules

How to Keep Score in Tennis

How Does a Tennis Tiebreak Work? - TennisReboot

How to read standings and deal with tiebreakers - Player Experience

TieBreaker, Board Game

How Do You Win a Tiebreak in Tennis?

Tiebreak in Tennis How to Play a Tiebreaker, History, and More