Lance McCullers, Jr. underwent Tommy John surgery on Tuesday and will miss the 2019 season.
The right-hander went 10-6 with a 3.18 ERA this season for the Houston Astros.
McCullers was placed on the disabled list with elbow discomfort from Aug. 5 to Sept. 24 but returned during the final week of the season, making three scoreless appearances.
Via ESPN