The announcement comes a day after the team said Hicks had a torn ulnar collateral ligament in his pitching elbow.
Hicks was removed from Saturday’s 4-2 win over the Los Angeles Angels in the ninth, after 1 1/3 innings.
The 22-year-old has thrown 211 pitches at least 100 mph this season, over 100 more than the next-closest player. Last year, Hicks threw 673 100 mph pitches and became the only player in the past 10 years to throw 500 or more 100 mph pitches in a single season.
The hard-throwing Hicks is 2-2 with a 3.14 ERA and 14 saves this season.