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.
Alexander Fernandes: SS/OF, (2025) Austin Prep, MA. 5-foot-7, 165-pound athletic lean frame. Athletic and projectable at the plate, the right-handed hitter had an exit velocity of 92 mph. (69.8 mph bat speed average). (21.3 mph hand speed average). Began in a balanced athletic stance with a controlled load, then used a short stride. Bat speed was quick, displayed an uphill loose swing plane and good extension on his finish. Found lots of barrels with loud contact. Gap to gap aggressive approach. Athletic projectable in the infield, recorded a position velocity of 72 mph; showed athletic consistent feet, a developing exchange, and twitchy soft hands. Fields the ball out front, movements laterally were athletic. Showed a high ¾ slot and consistent accuracy to the base. (Max spin ; Avg ).
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Alexander Fernandes: SS/OF, (2025) Austin Prep, MA. 5-foot-7, 165-pound athletic lean frame. Athletic and projectable at the plate, the right-handed hitter had an exit velocity of 92 mph. (69.8 mph bat speed average). (21.3 mph hand speed average). Began in a balanced athletic stance with a controlled load, then used a short stride. Bat speed was quick, displayed an uphill loose swing plane and good extension on his finish. Found lots of barrels with loud contact. Gap to gap aggressive approach. Athletic projectable in the infield, recorded a position velocity of 72 mph; showed athletic consistent feet, a developing exchange, and twitchy soft hands. Fields the ball out front, movements laterally were athletic. Showed a high ¾ slot and consistent accuracy to the base. (Max spin ; Avg ).