A History of Short Words

From the New York Times Crossword Puzzle

TKO

Mon, 9 May '22
Boxing ring ruling, in brief
Mon, 6 Dec '21
Boxing ruling, for short
Sat, 5 Jun '21
Ringside call
Wed, 10 Mar '21
Ring ref's decision
Tue, 9 Feb '21
Certain boxing win, in brief
Sun, 10 Jan '21
Result of the '64 Clay/Liston fight