when A-Rod came out with big serve, i thought he will be next one. Later on he seems became the one. Unfortunately, he didnt make it until now. he won us open thou. 1. one of worst net player (simply his volley sucks) 2. get easily down when opponent return A-Rod's first serve 3. lack of return ( A-Rod isnt great serve returner. however, his serve is still alright) 4. lack of speed (he seems pretty fast guy, but not that fast enough) 5. still too many unforced error (he always hit the ball so hard, 1/3 is out of line) here is what i summarize about Problems of A-Rod i talk about this my tennis buddies, they have sort of same opinions wat u think guys?