BOOST Baseball Camps with Boys & Girls Club of Mercer Island
Boost Baseball, 13221 SE 26th St, Suite H, Bellevue, WA 98005
About
BOOST Baseball Camps with Boys & Girls Club of Mercer Island includes individual drills, team drills, hitting instruction, and pitching instruction. The program also offers fall ball, velocity training, and Boost Development training.
• Ages: 8–13 years old
• Schedule: Boys & Girls Club of Mercer Island Summer Camp generally runs from June–August, with sessions offered June 24–28, July 15–19, and August 5–9
• Price: $235 per session (June 24–28; July 15–19; August 5–9 each listed at $235)
Co-founders Sean White and Andre Marshall are former MLB and MiLB players. The leadership team includes Co-Founder & Hitting Coach Andre Marshall, Co-Founder & Pitching Coach Sean White, Coach Mason McAlister, Coach Dan Rickert, and Coach Micah Yonamine. BOOST’s mission states that its high-quality coaches and state-of-the-art equipment provide consistent, professional, and personal instruction to each player, with an unbiased approach that focuses solely on player development. BOOST coaches work with children as young as 5 years through the professional level, and the business is independently owned and based in Bellevue, Washington. Boost Baseball is excited to continue its relationship with the Boys & Girls Club.
Testimonials about Andre Marshall describe his coaching as providing tools from a professional perspective, meticulous nature, and ability to develop a division 1 caliber skill set, as shared by Alex Hussey of William Jessup College. Greg Fuchs of Oregon State University states that Andre is one of the best outfield and hitting coaches he has had, and notes Andre’s impact on his out-fielding and swing. Peter Dudanakis of Holy Cross University states that over a few lessons, Andre helped him find power and consistency in his swing that he had not developed in two years of division 1 college baseball.
Last updated January 8, 2026.
• Ages: 8–13 years old
• Schedule: Boys & Girls Club of Mercer Island Summer Camp generally runs from June–August, with sessions offered June 24–28, July 15–19, and August 5–9
• Price: $235 per session (June 24–28; July 15–19; August 5–9 each listed at $235)
Co-founders Sean White and Andre Marshall are former MLB and MiLB players. The leadership team includes Co-Founder & Hitting Coach Andre Marshall, Co-Founder & Pitching Coach Sean White, Coach Mason McAlister, Coach Dan Rickert, and Coach Micah Yonamine. BOOST’s mission states that its high-quality coaches and state-of-the-art equipment provide consistent, professional, and personal instruction to each player, with an unbiased approach that focuses solely on player development. BOOST coaches work with children as young as 5 years through the professional level, and the business is independently owned and based in Bellevue, Washington. Boost Baseball is excited to continue its relationship with the Boys & Girls Club.
Testimonials about Andre Marshall describe his coaching as providing tools from a professional perspective, meticulous nature, and ability to develop a division 1 caliber skill set, as shared by Alex Hussey of William Jessup College. Greg Fuchs of Oregon State University states that Andre is one of the best outfield and hitting coaches he has had, and notes Andre’s impact on his out-fielding and swing. Peter Dudanakis of Holy Cross University states that over a few lessons, Andre helped him find power and consistency in his swing that he had not developed in two years of division 1 college baseball.
Last updated January 8, 2026.
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