Bronson Arroyo to undergo Tommy John surgery

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Diamondbacks right-hander Bronson Arroyo recently resumed throwing after he was diagnosed with a sprained ulnar collateral ligament in his right elbow last month, but he told Steve Gilbert of MLB.com late this afternoon that he will undergo season-ending Tommy John surgery.

With pitchers going down left and right this year, we really shouldn’t be surprised by another pitcher headed for Tommy John surgery at this point, but it’s still striking given Arroyo’s well-documented durability. The 37-year-old averaged 211 innings per season from 2005-2013 and threw at least 199 innings in all of them. He posted a 4.08 ERA in 14 starts with the Diamondbacks prior to landing on the DL for the first time in his career last month. It turns out he made six of them with a torn UCL.

Tommy John surgery typically carries a timetable of around 12 months, so Arroyo figures to be sidelined through midseason next year. He’s owed $9.5 million in 2015 while his contract includes an $11 million club option for 2016 or a $4.5 million buyout.

Alex Wood to try pitching out of the stretch

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Pedro Moura of The Athletic reports that Dodgers starter Alex Wood plans to pitch out of the stretch throughout the 2018 season. Wood got the idea when he watched Nationals starter Stephen Strasburg pitch against the Dodgers.

Wood, 27, finished last season 16-3 with a 2.72 ERA and a 151/38 K/BB ratio in 152 1/3 innings. That’s a mighty fine season, one in which many pitchers would not dare to mess with something that isn’t broken.

Interestingly, Wood indeed has had better results with runners on base — when he would pitch out of the stretch — as opposed to the bases being empty, with a respective OPS allowed of .523 versus .684, respectively. Over his career, he has allowed a .617 OPS with runners on and .706 with the bases empty.

In response to Moura’s tweet about Wood, retired pitchers Dan Haren and Jered Weaver took the opportunity to burn themselves. Haren tweeted, “I pitched a few seasons completely out of the stretch actually, just not by choice.” Weaver responded, “Sometimes I would just step off and throw the ball in the gap myself because I knew the hitter would do it anyways.”