PT TODAY: Koch gets first crack to replace Walker

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National League | American League
 
Diamondbacks | Taijuan Walker has UCL issue
Arizona Diamondbacks RHP Taijuan Walker (elbow) is dealing with an ulnar collateral ligament injury, according to manager Torey Lovullo. A timeframe for his return was not disclosed.  Source: MLB.com - Jack Magruder
 
BHQ take: The “UCL issue” was of the worst-case variety, and a second diagnosis confirmed that Walker will require Tommy John surgery. This will, of course, end Walker’s 2018 season and eat into 2019, and just as ARI had to do almost exactly a year ago with Shelby Miller (TJS), they will be auditioning replacements. Zach Godley more than answered that...

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