NEW YORK (Reuters) - Former champion Bianca Andreescu overcame a slow start to deliver a gutsy 6-4 6-4 win over American Lauren Davis in the second round of the U.S. Open on Thursday.

The sixth seed was down a break four times during the match but never folded, firing 19 winners at Louis Armstrong Stadium as she bids to recapture the magic of her successful 2019 Flushing Meadows campaign.