Robert Scott Jenks (born March 14, 1981) is an American former professional baseball pitcher.
He played in Major League Baseball (MLB) for the Chicago White Sox and Boston Red Sox from 2005 through 2011.
According to the Baseball Almanac, his fastest pitch was clocked at 102 miles per hour (164 km/h) on August 27, 2005, at Safeco Field.
He also threw a slider, changeup, and a hard, sharp-breaking curveball.
Jenks is third all-time in saves by a pitcher in a White Sox uniform.
Jenks is a two-time All-Star who formerly held the major league record for retiring consecutive batters (41).