Chicago White Sox pitcher Michael Kopech had Tommy John surgery on his right elbow Tuesday and will miss the 2019 season.
Kopech, the top pitching prospect in the organization, is expected to be ready for spring training in 2020. The surgery was performed by Dr. Neal ElAttrache in Los Angeles.
Kopech, 22, was 1-1 with a 5.02 ERA in four starts this season. He was placed on the 60-day disabled list with a torn elbow ligament Sept 8.
Kopech was acquired in the trade that sent star pitcher Chris Sale to Boston following the 2016 season. He was drafted by Boston in the first round in 2014.