The reactive strength index measurement of an athlete's explosiveness by comparing their jump height to the ground contact time in between their jumps. On a scale of 0-5.
Vertical Jump
A measure of any athlete's body strength and reach calculated from the flight time divided by the contact time.
Joseph Brienze: C/OF, (2026) Malden Catholic, MA. 5-foot-10, 165-pound lean athletic build. Above average and athletic at the plate, the right-handed hitter recorded an exit velocity of 90 mph. (75.1 mph bat speed average). (23.5 mph hand speed average). Starts in a balanced crouched stance with a small load, then uses a small stride. Bat speed is developing, exhibits an uphill loose swing plane and good extension on his finish. Found lots of barrels with loud contact. Gap to gap aggressive approach. Behind the plate, his best recorded throw to second was clocked at 67 mph; shows a natural transfer, soft hands, and developing feet. recorded pop times of 2.10-2.34. Clean setup. Showed consistent accuracy to the bag with a loose arm action and a high ¾ slot. (Max spin ; Avg ).
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Joseph Brienze: C/OF, (2026) Malden Catholic, MA. 5-foot-10, 165-pound lean athletic build. Above average and athletic at the plate, the right-handed hitter recorded an exit velocity of 90 mph. (75.1 mph bat speed average). (23.5 mph hand speed average). Starts in a balanced crouched stance with a small load, then uses a small stride. Bat speed is developing, exhibits an uphill loose swing plane and good extension on his finish. Found lots of barrels with loud contact. Gap to gap aggressive approach. Behind the plate, his best recorded throw to second was clocked at 67 mph; shows a natural transfer, soft hands, and developing feet. recorded pop times of 2.10-2.34. Clean setup. Showed consistent accuracy to the bag with a loose arm action and a high ¾ slot. (Max spin ; Avg ).