I got a JUGS Gun for Xmas this year and with my son down with a injury I didn’t have anything to measure so I took it to a local HS JV scrimmage. I gunned one of the pitchers from 66 to 68 on his fastball with most at 66 and then one wild pitch at 69. When he got tired in his final inning of 3 speeds dropped into the low 60s. The Dad asked me what the readings were. I told him. He then said “Well we’ve gunned him at 75 but he doesn’t throw harder than he has to.”
Where have I heard that story before?
The reality is that a kid throwing 66 to 68 probably maxes out at 70 to 72 (with no control) and 75, especially in the past is highly unlikely except for an errant reading.
Before we realized he was injured, a couple months ago, mine was throwing 68-70 with most pitches at 69 and maxed out at 71, although 8 of 10 going for max velocity were at 71. I think that may have been due to the injury and his body was just placing a limit on the amount of effort he could put into a pitch. Even so, I’d say he was probably overthrowing at 68-70 and should have been down around 67-68 for optimal control. He did have one reading of 73 in the previous session a couple weeks earlier when he only hit 71 a couple time in 10 pitches. My guess is that the kid holding the gun moved it a bit on that one.