Last players other than Federer, Nadal or Djokovic (the Big 3) to win these Slams: Australian Open: Marat Safin in 2005. French Open: Gaston Gaudio in 2004. Wimbledon: Lleyton Hewitt in 2002. US Open : Juan Martin Del Potro in 2009, Andy Murray in 2012. Compared to the other 3 Slams, the USO has shown itself to be more open to recent winners not named Federer, Nadal or Djokovic. Why is this? Thoughts?