Don't know much about womens, so I give my picks for Mens Roland Garros - Nadal will always be the favourite to win, if he stays healthy this year then reaching at least the finals should be no problem for him, let alone taking the trophy. Djokovic has a high chance as well, after reaching the final last year, losing in tight match, no doubt he wants to get revenge this year and get the Career Slam. Federer doesn't look great currently with his back issues, but his two month break should give him some good R&R. Expect him to reach the semifinals at least if he is healthy. Not sure about Murray, he hasn't even reached a final of any clay court tournament yet, but it will be interesting to see his results in the clay court season after his improved form since Wimbledon last year. Ferrer looks okay, but he doesn't really have any weapons to hurt the top 4, but clay is his favourite surface, perfect for grinding, might see any upset this year, maybe Murray again? Wimbledon - Always expect Federer to do well here, clearly his most preferred surface even though the courts have slowed down the previous years. Murray will be boosted by the strong 'home' support, don't be surprised if he reaches the final again this year. Expect Djokovic to reach the semis, at minimum. He will become a multiple Wimbledon champion, not sure when that will happen this year though. Tough to predict Nadal, but I don't think it will be an early upset again, or a 3rd crown. Let's say he at least reaches the quarterfinals or the semis if he doesn't get someone like Djokovic in his half of the draw. US Open - The most difficult one to predict. Well we have the defending champion Murray, looking for revenge Djokovic, 2009 champ Del Potro and perhaps Federer who is hungry for his 6th US Open title (hasn't won since 08). I think these four players will be in the semifinals. Nadal may have a small chance, but the fast hardcourts are brutal to his knees, I don't think he can win the US Open again. Berdych and Tsonga are dangerous, but not consistent enough to be a serious contender. So I'll try put the finalists in terms of best chance Roland Garros Finalists - Nadal 50%, Djokovic 25% Federer 15% Ferrer/Murray 10% Wimbledon - Finalists - Federer 40% Djokovic 30% Murray 30% US Open Finalists - Djokovic 20% Murray 20% Federer 15% Del Potro 15% Berdych 12% Tsonga 12% Nadal 6% Factors - Federer has no back problems - Del Potro remains consistent - Ferrer finds a weapon to beat the top 4 - Nadal keeps his knees healthy