I'm sure he's hitting them just as fast as the UCLA 1 and 2 blue chippers.... I'll just join the ttw band wagon and claim 115. The middle school kid next to me said I hit harder than any fifth grader in his class and one kid has taken a couple lessons. Few mandatory ttw caveats that add to cred: Only when I really want to; my percentage when hitting 115 drops to under 60% so I just spin in a lot at 104. The five foot kick at backboard gives them just as much trouble and saves wear and tear on my arm. Also lets us get in a few games before balls start going flat. All verified true because I can throw a tennis ball from my side of the court to the roof of the equipment shack. DunLop balls, 87.3 deg F court temp; 68% relative humidity; falling barometer.