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.
Jack O'Connor: 3B/1B, (2025) Xaverian Brothers, MA. 5-foot-11, 160-pound lean athletic frame. Athletic and capable at the plate, O'connor had a max exit velocity of 82 mph. (60.9 mph bat speed average). (23.5 mph hand speed average). Began in a balanced athletic stance with a wrapping load, then used a small stride. Bat speed was developing, uses a flat long swing plane and level finish. Had loud contact and found some barrels. Line drive approach. Capable in the infield, his best throw was registered at 63 mph; showed developing consistent feet, a natural exchange, and developing soft hands. Movements laterally were developing and he fields the ball out front. Had a high ¾ slot and consistent accuracy to the bag.
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Jack O'Connor: 3B/1B, (2025) Xaverian Brothers, MA. 5-foot-11, 160-pound lean athletic frame. Athletic and capable at the plate, O'connor had a max exit velocity of 82 mph. (60.9 mph bat speed average). (23.5 mph hand speed average). Began in a balanced athletic stance with a wrapping load, then used a small stride. Bat speed was developing, uses a flat long swing plane and level finish. Had loud contact and found some barrels. Line drive approach. Capable in the infield, his best throw was registered at 63 mph; showed developing consistent feet, a natural exchange, and developing soft hands. Movements laterally were developing and he fields the ball out front. Had a high ¾ slot and consistent accuracy to the bag.