Daniil Medvedev overcame a bizarre bird interruption and a brief umpire spat to defeat Sebastian Gorzny 6-1, 6-3, 7-5 and reach the US Open third round.
Jessica Pegula cruised into the US Open second round with a straight-sets win, while 27th seed Barbora Krejcikova became the first seeded casualty despite saving six match points.
