Sammy Siani Stats & Bio | Mariners Right Field

About Sammy Siani

Sammy Siani is a right fielder for the Seattle Mariners, wearing jersey number 91 and bringing youthful energy to the outfield. Born on December 14, 2000, in Glenside, Pennsylvania, Siani developed his baseball foundation at William Penn High School in Philadelphia, where he honed the skills that would attract professional attention. Standing 5'10" and weighing 195 pounds, Siani possesses the athleticism and instincts that define a modern outfielder. He entered professional baseball directly from high school, bypassing the traditional college route and committing fully to developing his craft within the minor league system before reaching the majors. As a young player still growing into his professional career, Siani represents the next generation of talent for Seattle, and his continued development will be closely watched by Mariners fans and analysts alike.

Updated: Mar 18, 2026