Gary Martin Allenson (born February 4, 1955) is an American former Major League Baseball catcher and coach and minor league manager. In , he spent a second stint as manager of the New Hampshire Fisher Cats of the Double-A Eastern League, after serving the previous three seasons in that role with the Triple-A Buffalo Bisons of the International League. Both are affiliates of the Toronto Blue Jays. In October 2017, Allenson and the Blue Jays severed their relationship. A former backup catcher for the Blue Jays, he had been a member of the Toronto player development organization since January 7, 2013. Playing career Nicknamed "Muggsy," Allenson was born in Culver City, California, and graduated from nearby Lawndale High School. He played college baseball for the Arizona State Sun Devils, then was selected by the Boston Red Sox in the ninth round of the 1976 amateur draft. In 1978, his third season of professional baseball, he was named the International League's All-Star catcher and Most Valuable Player after slugging 20 home runs and hitting .299 in 133 games played. During his rookie season in the Majors, Allenson was the Red Sox' most-used starting catcher, filling in for injured veteran and future Baseball Hall of Famer Carlton Fisk. After Fisk's departure via free agency after the 1980 season, Allenson was Boston's regular catcher in both and . For the remainder of his playing tenure (1979–85) in the Major Leagues, however, he was a backup for the Red Sox (1980–81; 1984) and Blue Jays (1985). The , Allenson batted and threw right-handed. In a seven-season MLB career, he posted a .221 batting average with 235 hits, 19 home runs and 131 RBI in 416 games played. Coaching/managing career Allenson began his minor league managerial career in 1987 with the Oneonta Yankees of the New York Yankees farm system. Compiling an 89–62 record in two years, he led the team to the New York – Penn League championship in 1988. He returned to the Red Sox organization in 1989, first managing at Lynchburg for two seasons (128–146) and then New Britain for one (47–93). He was promoted to Boston, serving as bullpen coach in 1992 and 1993 and third-base coach in 1994. He returned to the minors in 1996, managing the Charleston RiverDogs, then a Texas Rangers affiliate, to a 63–78 record, moving on to the Houston Astros farm system the following year to