why not?Agassi was at 35 a factor and their games are similar plus his body is taken care of
Agassi spent many of his 20-something years chasing women instead of chasing the tennis ball. He had less mileage at 31 than Djokovic will have at the same age. I doubt the likes of Djokovic, Murray and Del Potro will be winning slams at 31/32.
What about Ferrer? How old is he and what's his style and ranking?
Ferrer has less mileage at 30 than Djokovic and Murray will have at that age.
At 30, Ferrer has only played around 729 matches or so.
At 25, Murray has played almost 500 matches already while Djokovic has played around 588 matches. Djokovic is getting close to 600 matches at 25.
Of course he'll be a factor, if he still wants to play then that is. Ferrer is 31 in few months and a solid top 5, even has slim chance to take #4 if Nadal isn't ready for AO.
Nole is certainly better player than Ferrer, and at 31 he'll most likely face much weaker opposition than Ferrer is facing now. He could be like Serena then
Serena has played around 657 matches at 31. She has few mileage for a 31 year old.
Djokovic does not have Serena's serve.