Hicks' decision to undergo elbow reconstruction surgery seemed likely after the team announced Monday he had a torn UCL and it was exploring options.
Since making his Major League Baseball debut in March 2018, Hicks has set new standards for fastball velocity. The 22-year-old averaged 101.2 mph with his heater this season, per FanGraphs. He set an MLB record in May 2018 with a 105.1 mph pitch against the Philadelphia Phillies.
Hicks made strides in his second season after struggling with his control as a rookie. He will finish 2019 with a 3.14 ERA, 31 strikeouts and 11 walks in 28.2 innings after walking 45 in 77.2 innings last year.
The Cardinals could use John Gant, who has three saves and a 2.40 ERA this season, in the closer's role.