Over in the strings section there's currently a discussion on strings that produce a "heavy ball". And we hear that term constantly during television commentary and read about it frequently on TT. Since spin and shot quality are primarily technique related with varying levels of support from hardware I thought this question is best handled in this section. Some seem to believe that "heavy ball" refers only to pace. Others to spin. And yet others to a combination of the two. In which camp do you reside? A. Heavy Ball = Pace Alone B. Heavy Ball = Spin Alone C. Heavy Ball = A Certain Combination of Pace and Spin IMO a "Heavy Ball" is defined by a combination of Pace and Spin which is modified by the shot one is used to seeing. Pace alone doesn't make sense to me since I've returned shots coming it at extraordinary pace but it seems really easy. Such incoming shots are easily blocked back or hit accurately. Spin alone can result in a floating duck easily hit for a winner. You see these hit a lot in mid-level rec play. All spin, no pace or depth. But a truly heavy ball approaches quickly over the net, seems to accelerate after the bounce due to spin and positively leaps off the court, and it retains so much spin that it effects the quality of any return shot. Negating the incoming spin and turning the shot around with accuracy is actually a challenge. And that's where skill and experience comes in relative to MPH and RPM. You still need both to be "above average" but above average relative to the guy knocking the ball back. A pace/spin combo that will challenge a 4.0 is routine to a 5.0 (kudos to LeeD pointing that out in another thread). But regardless of level that pace/spin combo must be special and unusual.