A-game (??g?m?)n. The best performance a competitor is capable of in a sports contest: We’ll have to bring our A-game to defeat the league champions.[From the use of the letter A to indicate the best.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A-game
‘A’ game
‘A’ game n chiefly informal US and Canadian one’s best possible performance, esp in the phrase to bring or take one’s ‘A’ game Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014