The&nbsp;men decorated with scratches and red marks trickled through a hallway at the Olympic Aquatics Stadium and insisted the past didn't matter.Their countries, Croatia and Serbia, share a 150-mile border and a bloody history. They battled in the early 1990s as part of the conflagration ignited by the breakup of the former Yugoslavia. They traded claims of genocide. Their sporting events against each other became about much more than who won or lost and regularly led to unseemly chants, riots, even diplomatic incidents.On Saturday, they shared a pool in the water polo final at the Rio Games."We don't have any enemies when we play against them," Serbia's Gojko Pijetlovic said after his country muscled its way to an 11-7 victory for the gold medal. "We don't hate anybody. We just play water polo. We play everyone the same."