matchball
nounUK /ˈmætʃ.bɔːl/
US /ˈmætʃ.bɔl/
A matchball is the last ball in a game that can win the match for a player.
She served a perfect matchball to win the tennis final.
OTHER MEANINGS
2. In racket sports, a ball hit so well that the opponent cannot return it, ending the match.
His powerful matchball flew past the defender and sealed the win.
3. A ball used in a particular match, especially one kept as a souvenir.
The player signed the matchball and gave it to a young fan.
4. A decisive moment or final chance to succeed in a competition.
The debate was her matchball, and she spoke with total confidence.