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

Serve Up Success: A Beginner's Guide to Tennis Tie Break Rules - Tennis NZ

How does a tie-break work in tennis? Wimbledon scoring rules explained and how long tie-breaks can last

How to Play a Tennis Tiebreaker: 12 Steps (with Pictures)

Tie Break Sports and Scholarships - Sports Exchange Agency

Who serves first in a tiebreak?

How to pick the tiebreaker for your 2021 March Madness bracket - The Washington Post

Frome Tennis / TB10's

What Is A Tie Break In Tennis?

8 Tips To Win More Super Tie Breakers

Tennis scoring system - Wikipedia