India, Aug. 28 -- Jelena Ostapenko couldn't keep her cool. After Taylor Townsend beat the Latvian in the second round of the US Open on Wednesday, the two got into a heated argument near the referee's chair. They went at each other, with Townsend even gesturing towards fans who were booing her opponent. Townsend beat Ostapenko 7-5, 6-1.

Townsend beat 25th seed Jelena Ostapenko in straight sets. As soon as he won the last point, crowds at Flushing Meadows started cheering for the American. The two players then had an intense verbal exchange at the net.

After the brief argument seemed over, Townsend riled the crowd up, pointing at Ostapenko and asking the fans to boo her. After the argument, Townsend called out Ostapenko during the post-m...