Bush dealt with shoulder soreness in April, but was able to avoid a shoulder-related DL stint for the entirety of the 2017 season.
Bush, 31, has produced impressive numbers out of Texas' bullpen after a miraculous return to baseball. A former first-overall selection of the Padres as a shortstop in 2004, Bush has reinvented his career as a pitcher after off-field issues forced him out of the game from 2007-2016.
Now a solid late-inning option for the Rangers, Bush has assembled a 3.08 ERA and 9.4 K/9 across 114.0 inning the past two seasons. The righty was removed from the closer's role after blowing three saves in five chances last June, but settled down with a 3.48 ERA over his final 27 appearances.
According to the Dallas Morning News' Evan Grant, there are "ongoing conversations" about converting Bush to a starting role. Rangers GM Jon Daniels said publicly that the surgery is not expected to impact Bush' future, in either the bullpen or the rotation.