- Full name Boston Kellner
- Born 06/17/2006 in
- Profile Ht.: 6'0" / Wt.: 205 / Bats: R / Throws: R
Top Rankings
Draft Prospects
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School: Hamilton HS, Chandler, Ariz. Drafted/Committed: Texas A&M
Age At Draft: 19.1
BA Grade: 50/Extreme
Kellner has been a high-level performer throughout his high school career, first in Colorado and then in his final two seasons with Hamilton High in Arizona. Kellner has a filled-out frame at 6-foot, 205 pounds and packs plenty of strength into his righthanded swing. He has above-average raw power and will show it off in batting practice with deep blasts to his pull side, but has also done a nice job adjusting his approach in games and showing more of a hitterish look. He has an upright, relaxed stance without much wasted movement and features a slightly uphill bat path. He has the tools to hit for both average and power at the next level, though he could still shore up some of his miss tendencies against spin. Kellner has turned in above-average run times underway but could settle into more of an average runner at physical maturity. He’s a shortstop now, but has actions that could be a bit long and footwork that could be a bit light for the position. He profiles as a solid defender at third base with a plus throwing arm. Kellner also has some exposure in the outfield and could fit in a corner. He’s committed to Texas A&M and will be 19 on draft day, making him an eligible sophomore in the 2027 class if he makes it to campus.
Scouting Grades: Hit: 50 | Power: 50 | Run:50 | Field: 50 | Arm: 60. -
School: Hamilton HS, Chandler, Ariz. Committed: Texas A&M
Age At Draft: 19.1
Kellner has posted monster numbers each spring of his high school career, first in Colorado and then during his junior year at Hamilton High in Arizona in 2024. He’s a physical slugger with plenty of strength behind his swing that’s evident in BP with deep blasts over the fence to his pull side, though he can get more contact-oriented in games. He has improved his bat path in 2024 and has consistently had a low swing-and-miss rate with a short, balanced stroke. Kellner moves well for his size as a tick above-average runner underway. He is a solid defender at third base with a strong arm.
