Underwater Gymnastics | Whitney & Blakely Bjerken AP 9:25 p.m. EDT August 6, 2016(Photo: The Associated Press)RIO DE JANEIRO (AP) In the midst of arguably their finest team performance in a quadrennium, a familiar nemesis provided the U.S. men"s gymnastics team with a reminder that nothing comes easily.Especially on pommel horse. Especially at the Olympics.While having Chris Brooks and Sam Mikulak go spinning...