Fed is looking to get the Gold, he wants it badly..... Djokovic cried when he lost to Nadal in 2008, and started his great 2011 with a nationalistic DC win in 2010. I think Djokovic wants this badly, but that doesn't mean he hasn't changed his focus after winning 3 GS in 2011. Nadal has just mentioned that he won't play DC 2012 in order to prep for the Olympics. Either he means it or he doesn't, and is just trying to get some rest. Odds are he'd be thrilled to win it again, and on grass he has a much better chance than hard courts. Murray..... wow, for him, it would be OUT of this world to be a winner at the Olympics at Wimbledon, but I see him as having the least chance of the top 4. Of course, there are all kinds of players that would also love to win, but have to overcome most likely the top 4. I think how players manage their year in order to prepare will affect the choices of tournaments and focus on possibly tiring themselves out before the Olympics. I can't see any player winning FO, W, and then W Olympics..... that's such a grind during a short period of time.