Definition of A game
one's A game
: one's highest level of play or performance If we don't bring our A game with us, we don't have a chance. — Tom Kelly, quoted in New York Times, 14 Aug. 2001 … let me tell you something: I can still pitch. I might not have my A game every night, but like I tell the young guys, you've got to go and win when things don't feel just right. — Roger Clemens, quoted in Sports Illustrated, 31 Mar. 1997
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First Known Use of a game
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