Who: US Softball
Olympics: Beijing 2008

After winning the previous three gold medals, the US women were heavy favorites to capture a fourth gold in Beijing. The US outscored its opponents by a staggering 57-2 margin heading into the gold medal game. Those are Dream Team numbers on steroids for crying out loud. Of course they'd steamroll Japan. Not so fast. The team's bats were ice cold and they lost 3-1. You can go ahead and forget that Dream Team comparison.