John Kalkau

(Editor’s Note: This is the 15th installment of the Up Next series in which we highlight the top underclassmen on Long Island. Previously, we featured Jack Mulligan, Alex Pagano, Quincy Gibbs, Michael Cotto, Charlie Edwards, Evan Picciano, Nick Lawrence, Robbie Mascia, Jacob Abran, Tyler Camastro, Jason Davis, Michael Garcia ,Vincent Bourne and Nate Lewis. Special thanks to Ken Kortright State Farm for sponsoring this year’s series.) Some swings from this past season pic.twitter.com/zsD0SC1hnt — Jack Yonkman (@jack_yonkman) December 4, 2025 Regardless of what new innovations come to the game of baseball, power will always be a valuable skill. In the case of Division sophomore Jack Yonkman, he put his power on display all summer. It was a tremendous season for the slugger. Over 36 games pla...