John William Grabow, nicknamed "Grabes" (born November 4, 1978) is an American retired Major League Baseball left-handed reliever.
He played for the Pittsburgh Pirates and Chicago Cubs.
In his major league career, he held opposing batters to a .218 batting average and a .293 slugging percentage when there were runners in scoring position.
He made 340 appearances between 2004–08, which ranks him fourth in the majors and first among left-handed relievers in the National League for that period.In nine years in the majors he played in 506 games and had a 24–19 record, using a fastball, slider, and change up.