play A off against B

Từ điển Oxford Advanced Learner 8th

ˌplay A ˈoff against B derived
(BrE) (NAmE ˈplay A off B)to put two people or groups in competition with each other, especially in order to get an advantage for yourself
•She played her two rivals off against each other and got the job herself.
related noun ↑play-off
Main entry: ↑play_derived