Brent Bradley Knackert (born August 1, 1969) is a former pitcher in Major League Baseball who played for the Seattle Mariners (1990) and Boston Red Sox (1996). Listed at 6' 3", 185 lb., he batted and threw right-handed. In a two-season career, Knackert posted a 1-2 record with 33 strikeouts and a 7.04 ERA in 32 appearances, including two starts and 47⅓ innings of work.