Jacob Rienstra: RHP/OF, (2026) Haslett, MI. 5-foot-11, 145-pound. (64.4 mph bat speed average). (21.1 mph hand speed average). Begins in a tall active stance with a big wrapping load, then uses a small leg kick. Produced some loud contact and found some barrels. Raw in the outfield, his best throws to the infield topped out at 70 mph; has a natural lengthy exchange, choppy developing feet, and developing firm hands. Movements laterally were developing and he fields the ball deep. Solid capable on the mound, used a moderate arm action with a high ¾ arm angle while showing quick good arm speed. Drop-and-drive type pitcher who shows high effort. Balance point is tall with even shoulders during delivery. Lands closed with upright recoil finish. (Max spin 1786; Avg 1710).
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Jacob Rienstra: RHP/OF, (2026) Haslett, MI. 5-foot-11, 145-pound. (64.4 mph bat speed average). (21.1 mph hand speed average). Begins in a tall active stance with a big wrapping load, then uses a small leg kick. Produced some loud contact and found some barrels. Raw in the outfield, his best throws to the infield topped out at 70 mph; has a natural lengthy exchange, choppy developing feet, and developing firm hands. Movements laterally were developing and he fields the ball deep. Solid capable on the mound, used a moderate arm action with a high ¾ arm angle while showing quick good arm speed. Drop-and-drive type pitcher who shows high effort. Balance point is tall with even shoulders during delivery. Lands closed with upright recoil finish. (Max spin 1786; Avg 1710).