It turns out that bouncing tennis balls can get you into the record books. (AP Photo)
The Mutua Madrid Open kicked Sunday off by setting a new Guinness World Record. The record at task was most people to bounce tennis balls on their racquets simultaneously for 10 seconds.
Inside the Caja Magica, 1,470 spectators and workers joined Tomas Berdych, Jo-Wilfried Tsonga, Kei Nishikori and Stan Wawrinka to successfully bounce their ways into the record books. The previous record was set at the China Open last year with 767 participants.