Robert William Stephenson (born February 24, 1993) is an American professional baseball pitcher for the Cincinnati Reds of Major League Baseball (MLB).
He made his MLB debut on April 7, 2016.
Stephenson threw two consecutive no-hitters while in high school, and was named California's high school player of the year by Gatorade.
The Reds drafted him in the first round of the 2011 Major League Baseball draft with the 27th overall selection.