Bob Bryan's drone takes flight during London practices

Bob and Mike Bryan are the top seeds at the ATP World Tour Finals in London. (AP Photo)

His sport of choice is tennis and not golf, and yet Bob Bryan delivered a birdie at London’s O2 Arena over the weekend. He took a spin with drone video at the ATP World Tour Finals venue that provided aerial looks at a few practice sessions. Among those featured included Nicolas Mahut, Fabio Fognini and Roger Federer, who amusingly waved to the camera toward the clip’s end.