Swiss tennis ace Roger Federer's children (left to right) Myla Rose, Charlene Riva, Lenny and Leo. Pic/Getty Images

Roger Federer says he's a big believer in kids playing sport, but he's not keen on his own children following in his footsteps. The Swiss great and wife Mirka had identical twins Myla Rose and Charlene Riva in 2009 and another set came along five years later, Leo and Lenny. They are seen watching their dad ply his trade, but after years travelling the world on the tennis tour, Federer, 36, would prefer not to have to do it all over again.