Austin St. Laurent Stats & Bio | Mariners Third Base

About Austin St. Laurent

Austin St. Laurent is a third baseman for the Seattle Mariners, wearing jersey number 91. Born on July 13, 2002, in Dover, New Hampshire, St. Laurent brings a determined work ethic shaped by his New England roots. He developed his skills at Appalachian State University, where he honed the fundamentals that earned him a spot at the professional level. Standing at 6'0" and weighing 190 pounds, St. Laurent possesses the athleticism and physicality that scouts look for at the hot corner. His journey from a small-market college program to a competitive MLB organization like Seattle speaks to both his talent and relentless drive. At just 22 years old, St. Laurent represents an exciting piece of the Mariners' future as he continues to grow into his professional career.

Updated: Mar 5, 2026