Any tips on how to improve one's ability to read or predict an opponents shot would be helpful. While visual cues in advance of contact such as foot placement, racquet face preparation, etc. are probably key to this, how does one do this and are there any tips on how to watch and practice this skill. Seems like someone could come up with a great DVD or You Tube video with voice over to point out the subtle cues for a sample player -- although picking up cues is different for each player. Also, when anticipating a service return or in a rally with someone, I thought it best to watch the ball rather than the player -- same for the serve coming my way. Is this a good practice or not?