loser by a knockout

n.

[体]被击败出局者；

Biggest loser. Calorie knockout
A Comparison of two different ways to distinguish winners, drawers and losers in knockout matches of FIFA World Cup 2014
The expected strengths of losers in knockout tournaments.
Cricket: Wolves on Knockout Revenge Mission
The one and only loser, by Cuban Agency News, Fidel Castro Ruz
Deckert J. The adenosine A(2A) receptor knockout mouse: a model for anxiety? Int J Neuropsychopharmacol 1: 187-190
Betting: Knock Me and I'll Knock You Out
Obituary: Carl Olson
Romeo Anaya
Romeo Anaya