play into someone's hands

Usage of “play into someone's hands”

1. Bill played into my hands when he emailed the team after our disagreement. Now everyone knows how wrong his viewpoint is.

2. Don't play into his hands. Be sure to analyze what he says so you don't do what he wants.

Examples of idiom “play into someone's hands” from Twitter

• 
  melian225:

  @Ngseries The mature thing to do is ignore it. He might have been trying to get a reaction so you don't want to play into his hands.

• 
  _thephoenix_:

  @CapturedJack You do know you're playing into his hands right?