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Red Sox reliever Carson Smith has had a setback in his recovery from 2016 Tommy John surgery, as Jen McCaffrey of MassLive.com writes. Smith was throwing off a mound a couple of weeks ago but has “had to slow down,” manager John Farrell told reporters. Smith is long tossing from 110 feet but is now two weeks removed from his most recent mound session. Boston had been targeting a June return for Smith, but a July return is now more realistic, per McCaffrey. The Red Sox have had rough luck when trading for potential setup arms; in addition to losing Smith for more than a year due to Tommy John surgery just months after trading for him, the team has yet to reap any benefit from its trade to acquire Tyler Thornburg this offseason, as Thornburg has been sidelined all season by a right shoulder impingement. CSNNE.com’s Evan Drellich tweeted recently that Farrell said on MLB Network Radio on SiriusXM that Thornburg essentially needs to progress through Spring Training all over again, which would normally consist of seven to 10 appearances.