Mark J. Rebilas / USA TODAY Sports

Storylines: Shelby Miller has torn UCL

Shelby Miller was officially diagnosed with a torn UCL on Thursday and will likely miss the rest of the 2017 season and most of the 2018 season. That and more as we run down all the news and notes from around baseball on Thursday...

Top Storylines:

- The Arizona Diamondbacks blockbuster offseason trade for right-hander Shelby Miller from the Atlanta Brave before the 2016 season continues to look worse and worse.  After seeing several specialists, the righty has been diagnosed with a torn UCL in his right arm and a flexor strain per Tommy Stokke of FanRag.  Tommy John surgery is a viable option for him to repair the damage and one he is seriously considering.  The surgery would end his 2017 campaign and most likely take him out for most if not all of the 2018 season as well.  It’s a huge punch in the gut for both Miller and the Diamondbacks as they were all hoping to put 2016 behind them and have a much more productive 2017. The right-hander had shown better results early in 2017 as he put up a 3.50 ERA across 22.0 innings of work with a 48% ground ball ratio. The Diamondbacks now have vacancy in their rotation with Miller out for the foreseeable future but have some promising options in Archie Bradley and Braden Shipley.  Bradley has been successful working out of the bullpen but the Diamondbacks may end up shifting him back into the rotation. Also, given his high-profile status as a top prospect, it makes sense for the team to try him as a starter again.

Other Storylines:

- The Cincinnati Reds have officially activated catcher Devin Mesoraco from the DL per a team announcement.  After being sidelined the past two years to various injuries, the catcher will attempt to play a full season and try and regain the form that earned him a bid to the 2014 All-Star game after enjoying a season where he slashed .273/.359/.534 and a career-high 25 home runs.  It remains unclear what his future looks like with the Reds as they are still rebuilding.  If he can recapture his form, he could become an interesting trade chip or re-establish himself as a core piece of the team moving forward.

- New York Mets flame throwing righty Noah Syndergaard is dealing with a dead arm and right biceps discomfort per Anthony DiComo of  The Mets are going to be very cautious with their attempts on how to proceed with Syndergaard’s injury given how important he is to the team’s present and future.

- Mets star outfielder Yoenis Cespedes is expected to hit the DL after suffering a hamstring pull in his left side suffered earlier in Thurday’s game against the Atlanta Braves per DiComo.  He is expected to undergo an MRI on Friday to reevaluate his hamstring and there are no indications on how long he’ll be out.  Should he be out an extended period of time there’s a strong chance the Mets will struggle mightily as Cespedes is the heart and soul of their offense.

- Boston Red Sox reliever Carson Smith has suffered a setback in his recovery from Tommy John surgery per Jen McCaffrey of  He was throwing off a mound but had to slow it down and hasn’t been able to take the mound in two weeks.  His initial targeted return date in June now looks to be pushed back to July at the earliest.

- Texas Rangers star third baseman Adrian Beltre is also not recovering well from his strained hamstring per T.R. Sullivan of  He is still reportedly suffering from swelling and tightness and there is no set timetable for his return.  The Rangers were hoping to get him back in May but that doesn’t look to be a viable option at the moment.

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