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.
Abraham Rosario: C/RHP, (2026) Manchester, CT. 150-pound athletic strong frame. Above average at the plate, the hitter had an exit velocity of 90 mph. (67.6 mph bat speed average). (18.7 mph hand speed average). Begins in a tall balanced stance with a tight compact load, then uses a controlled toe tap stride. Has electric bat speed, short simple swing plane and good extension on his finish. Barreled up multiple balls with tons of loud contact. Line drive aggressive approach. Behind the plate, he recorded a position velocity of 74 mph during throw downs; had soft hands, athletic quick footwork, and a quick twitchy transfer. produced pop times of 2.04-2.16. Athletic setup with tons of flexibility. Showed consistent accuracy to the bag with a high ¾ slot and a short arm action. Projectable on the mound, used an short quick arm action with a high ¾ arm angle. Tall-and-fall type pitcher and uses some effort. Has in line shoulder with an strong balance point. Lands square with an athletic balanced finish. Had a command down in the zone both sides of the plate that shows straight movement. (Max spin 2139; Avg 2050). Threw his 1/7 curveball with glove side control and slurvey action. His changeup showed arm side command and fading action.
Exit Velocity: 90 mph
Arm Velocity: 74 mph
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Abraham Rosario: C/RHP, (2026) Manchester, CT. 150-pound athletic strong frame. Above average at the plate, the hitter had an exit velocity of 90 mph. (67.6 mph bat speed average). (18.7 mph hand speed average). Begins in a tall balanced stance with a tight compact load, then uses a controlled toe tap stride. Has electric bat speed, short simple swing plane and good extension on his finish. Barreled up multiple balls with tons of loud contact. Line drive aggressive approach. Behind the plate, he recorded a position velocity of 74 mph during throw downs; had soft hands, athletic quick footwork, and a quick twitchy transfer. produced pop times of 2.04-2.16. Athletic setup with tons of flexibility. Showed consistent accuracy to the bag with a high ¾ slot and a short arm action. Projectable on the mound, used an short quick arm action with a high ¾ arm angle. Tall-and-fall type pitcher and uses some effort. Has in line shoulder with an strong balance point. Lands square with an athletic balanced finish. Had a command down in the zone both sides of the plate that shows straight movement. (Max spin 2139; Avg 2050). Threw his 1/7 curveball with glove side control and slurvey action. His changeup showed arm side command and fading action.
Exit Velocity: 90 mph
Arm Velocity: 74 mph