Robert Scott "Bobby" Jenks is a Major League Baseball relief pitcher for the Chicago White Sox who made his debut in 2005.
Jenks is one of the hardest-throwing pitchers in baseball, with a fastball that routinely hits 98 to 100 mph. According to the Baseball Almanac, his fastest pitch was clocked at 102 mph on August 27, 2005, at Safeco Field. He also has a slider, a changeup, and a hard, sharp-breaking curveball.