Tennis fans were appalled over the weekend at a moment of horrible, unsportsmanlike conduct at the US Open... in the stands. After star player Kamil Majchrzak's win on Thursday, he signed some memorabilia for fans - and to one cute kid he offered his signed hat. But in a disgusting video that's gone viral, a man standing next to him saw Majchrzak distracted... and snatched the hat before the kid could get it! He then took it over to his wife to celebrate as the young boy pleaded for it back. Awful. Obviously this is something we've seen before.