NEW YORK (REUTERS) - British 13th seed Johanna Konta recovered from a health scare at a humid US Open on Wednesday (Aug 31) to claim her place in the third round with a 6-2 5-7 6-2 win over Bulgaria's Tsvetana Pironkova.

Konta was leading by a set but serving at set-point down in the second when she suddenly dropped to her knees, shaking and struggling to catch her breath as temperatures neared 31 deg C.

After receiving extensive treatment, including ice bags, first from the umpire and later from a doctor, Konta dropped the set on a double fault.

But after a bathroom break between sets, the 25-year-old recovered in time to set up a third-round clash with Belinda Bencic of Switzerland.