This is my list of the Top 5 player in every surface: HC (from January until Miami and after Wimbledon until USO) : 1. Nadal 2. Del Potro 3. Federer 4. Murray 5. Djokovic Nadal is clearly obvious because he has because he has won 1 GS and 1 MS and made 2 SF and 2 QF in Master Series. He was also finalist in Rotterdam and QF in Doha. Just the fact Del Potro also has won 1 GS makes him above everyone else as well IMHO. Plus he has 1 Master Series Final, 2 SF and 1 QF as well. He also won Washington prior to the Rogers Cup (Montreal). The fact Federer performed overall better in GS makes him in third place. He's a finalist in both HC GS + 1 MS, 2 SF and 1 QF in Master Series. Murray has a 4th round loss in the Australian Open and US Open. However he has 2 MS, 1 MS Final and 1 SF. He also has won Doha and Rotterdam. Djokovic deserves the 5th spot because of his overall performance in HC. He lost in QF of the AO Open and lost in SF at the US Open. In Master Series, he has 2 Finals, and 2 SF. However he has a title in Dubai. For Clay here is the follow rankings: 1. Federer 2. Nadal 3. Djokovic 4. Del Potro 5. Söderling Federer is obvious since he won RG + 1 MS, 1 SF and a 2 Round in Master Series. Nadal is second since he won 2 MS + 1 MS Final and he also won Barcelona. However he lost in the 4th round in RG. Djokovic is the third choice since he has Master Series Finals and 1 SF and he won the Serbia Open. However he has a 3rd round loss in RG. Del Potro is my 4th choice since he was overall consistent on Clay. He was a SF in RG, he has 1 SF, 1 QF and 2nd round loss in Master Series. Söderling is fifth due mostly to his impressive Final run in RG. However he has a decent run in MS : 2 3rd Round and 1 QF. However he has a title in the Swedish Open. Here are my rankings for Grass: 1. Federer 2. Roddick 3. Murray 4. Haas 5. Djokovic Since Queens and Halle are considered non important tourneys according to several users, that's why I made a change. Federer is obvious since he won Wimbledon. Roddick since he was a finalist at Wimbledon and had to retire in the SF due to injury. Queen has more prestige than Halle. Murray since he won Queens and a was a SF at Wimbledon. Haas since he won Halle and was a SF at Wimbledon. Djokovic since he was a finalist in Halle and had a QF at Wimbledon (I know there will be alot of disagreements with my rankings). If you have any modifications to add, please feel free to add.