Newly acquired Twins reliever Sam Dyson went to the injured list Sunday with right biceps tendinitis. It turns out the issue has been bothering him since mid-July, Do-Hyoung Park of MLB.com tweets. Dyson let Twins general manager Thad Levine know about the discomfort “a few days ago,” per Park, who reports the club decided to shut him down thereafter. It’s an unfortunate turn of events for Dyson, who had been enjoying a great year before Minnesota acquired him from San Francisco at the trade deadline, and for a Twins team that made him its headlining July pickup. Dyson pitched twice for the Twins before going on the IL and put up calamitous numbers in both outings, yielding six earned runs on six hits and retiring just two hitters.
- The Rangers have shut left-handed prospect Taylor Hearn down for the season because of renewed irritation in his pitching elbow, though doctors don’t believe it’s related to his ulnar collateral ligament, Evan Grant of the Dallas Morning News writes. Hearn originally suffered the injury during a nightmare of a major league debut against the Mariners on April 25. The 24-year-old Hearn started the game, but he ultimately recorded only one out and gave up five runs (four earned) on four walks and three hits. MLB.com ranked Hearn as the Rangers’ 11th-best prospect the day of his first promotion. He’s now 26th on the list.
- Better news from Grant, who reports injured Rangers righties Edinson Volquez and Shawn Kelley are progressing toward returns. Volquez, who’s set to retire after the season, will start a rehab assignment Wednesday as he works back from an elbow strain that has shelved him for almost the whole year. Biceps soreness has kept Kelley out since July 12, though the Rangers could activate him Tuesday. The 35-year-old has served as the Rangers’ closer at times this season, saving 11 of 15 chances, and has posted an effective 3.00 ERA/4.10 FIP with 8.73 K/9, 1.36 BB/9 and a 30.1 percent groundball rate in 33 innings.
- Athletics lefty Jesus Luzardo got through a two-inning rehab appearance unscathed Monday, per Martin Gallegos of MLB.com. Luzardo will now move from the rookie level to Single-A ball, where he’ll make a three-inning start Saturday. The prized 21-year-old hasn’t been able to make his much-anticipated major league debut this season on account of shoulder and lat injuries. Luzardo could, however, serve as a late-season reinforcement for the wild card hopefuls.
- The Tigers placed righty Jordan Zimmermann on the IL on Monday with a right cervical spasm, the team announced. It’s the latest setback in an ugly Detroit tenure for Zimmermann, whose five-year, $110MM contract has been a bad investment for the club from the get-go. This season, Year 4 of the deal, Zimmermann has logged a 7.13 ERA (with a better, albeit unspectacular, 4.80 FIP) in 72 innings.