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.
Joe Keenan: SS/2B, (2025) Grosse Ile, MI. 5-foot-7, 140-pound. (67.0 mph bat speed average). (18.7 mph hand speed average). Began in a wide balanced stance with an arm bar load, then used a controlled stride. He found a few barrels with some loud contact. Capable while in the infield, made throws up to 68 mph; has sure hands, consistent feet, and a developing exchange. Laterally, movements were average and fielded the ball out front.
7/12/23
Joe Keenan: SS/2B, (2025) Grosse Ile, MI. 5-foot-7, 140-pound. (62.5 mph bat speed average). (18.8 mph hand speed average). Starts in a pre-loaded wide stance with a controlled arm bar load, then uses a small leg kick. Barreled up multiple balls with some loud contact. Solid in the infield, his position velocity was registered at 65 mph; had developing footwork, a natural exchange, and developing consistent hands. Fielded the ball out front with average movement laterally. (Max spin ; Avg ).
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Joe Keenan: SS/2B, (2025) Grosse Ile, MI. 5-foot-7, 140-pound. (67.0 mph bat speed average). (18.7 mph hand speed average). Began in a wide balanced stance with an arm bar load, then used a controlled stride. He found a few barrels with some loud contact. Capable while in the infield, made throws up to 68 mph; has sure hands, consistent feet, and a developing exchange. Laterally, movements were average and fielded the ball out front.
Joe Keenan: SS/2B, (2025) Grosse Ile, MI. 5-foot-7, 140-pound. (62.5 mph bat speed average). (18.8 mph hand speed average). Starts in a pre-loaded wide stance with a controlled arm bar load, then uses a small leg kick. Barreled up multiple balls with some loud contact. Solid in the infield, his position velocity was registered at 65 mph; had developing footwork, a natural exchange, and developing consistent hands. Fielded the ball out front with average movement laterally. (Max spin ; Avg ).