In the process of rebounding from the worst season of his Major League Baseball career, Brownwood High graduate Shelby Miller has hit a major roadblock.

The 26-year-old Miller will undergo Tommy John surgery after being placed on the 10-day disabled list by the Arizona Diamondbacks on Monday, who then moved him to the 60-day DL Thursday.

Miller was weighing his options after suffering a forearm flexor strain and a partial tear of his ulnar collateral ligament in his right elbow during his start last Sunday against the Los Angeles Dodgers.

A Twitter post by Miller on Saturday stated, “It is with a heavy heart breaking this kind of news to fans, teammates, friends and family. All of us face adversity and have to deal with things that throw us down a road we don’t wanna go on. This is another one. I will do everything in my power to get back stronger/better than ever. Thank you for the prayers and showing me love through all of this. It will not be easy, I will persevere and stay strong through this process.”

A date has not been set for the surgery as Miller will miss the rest of the season.

In 2016, Miller posted a 3-12 record with a 6.15 ERA in 20 starts. Miller was demoted in midseason to Triple A Reno before being recalled late in the season.

This year, Miller was off to a 2-2 start for Arizona with a 4.09 ERA in four starts, collecting 20 strikeouts and 12 walks over 22 innings pitched.

A 2015 All-Star Game selection for the Atlanta Braves, Miller owns a 37-49 career record over 120 starts with a 3.67 ERA, 573 strikeouts and 277 walks in 698.1 innings pitched.

Miller was a first-round draft choice of the St. Louis Cardinals in the 2009 draft and finished third in the National League Rookie of the Year voting in 2012.