1. perform to the best of your ability
Professional
Social
bring your A-game to impress/succeed
The expression 'bring your A-game' comes from athletics and sports. This expression is used to encourage an athlete or competitor to arrive in the best condition possible and with a great attitude determined to win. This expression is now used in other contexts for the same reason. "I expect everyone to arrive with their A-game tomorrow morning. We need to win over this client."