The Romanian gained some revenge for her Wimbledon semi-final defeat to Bouchard by beating the Canadian 6-2 6-3 on Monday.
Having been out of action for nearly three weeks with a hip injury, Halep is pleased to be back on court and winning matches.
"I'm really happy I found my game again," she is quoted as saying by the WTA's official website. "I was very aggressive and made some winners. I played well. I'm really happy with this match, but Genie is a great player. She's very young and she'll be at the top soon, of course."