Injury Notes: Teheran, Buchter, Giants, Donaldson, Schoop, Nats

Braves righty Julio Teheran left his outing today with what the team is calling “right upper trap tightness.” He had shown a concerning velocity drop before departing, as David O’Brien of the Atlanta Journal-Constitution tweets. The 27-year-old Teheran entered the day with a 4.00 ERA in his 27 innings, while carrying a career-best 12.8% swinging-strike rate, but gave up three earned in his three frames. It seems generally promising that there’s a muscular explanation for Teheran’s sudden loss of velo, though of course that does not necessarily mean he’s out of the woods and we’ll have to await further word.

Here’s the latest on some other health situations around the league:

• The Athletics have placed southpaw Ryan Buchter on the DL, per a club announcement. He’ll be replaced on the active roster by Danny Coulombe. At this point, the team plans to shut Buchter down for at least ten days and possibly longer, as MLB.com’s Jane Lee tweets. The 31-year-old southpaw, who was acquired over the offseason, has been quite good thus far for the A’s. He’s carrying a 1.69 ERA with 9.3 K/9 and 3.4 BB/9 over 10 2/3 innings.
• While the Giants will hold off on putting Mac Williamson on the DL, he’s in the concussion protocol at present, as manager Bruce Bochy informed reporters including Kerry Crowley of the Bay Area News Group (Twitter link). In the meantime, the organization has brought fellow outfielder Austin Slater onto the active roster, creating space by sending reliever Josh Osich to the 10-day DL. It’s unclear at this point how long Slater will have in the majors, but he’ll surely be hoping to follow the same track as Williamson, who kept on raking after receiving a promotion. Slater owns a .358/.435/.642 slash with just six strikeouts in his 62 plate appearances on the year at Triple-A.
• Blue Jays third baseman Josh Donaldson is beginning his rehab assignment tomorrow, as the team announced. He’ll open as a DH as he eases back into action, though the real test will come when he puts his throwing back on display at game speed. There’s similarly good news for the division-rival Orioles, who expect to send second baseman Jonathan Schoop on a brief rehab assignment next week, as Roch Kubatko of MASNsports.com tweets. He has been out for two weeks with an oblique strain.
• The Nationals, who are still waiting for a trio of important players, gave some updates today. (Links to the Twitter feed of Mark Zuckerman of MASNsports.com.) Third baseman Anthony Rendon is reasonably close and is expected to return in relatively short order after a brief stint on the shelf. It’s not quite as rosy for outfielder Adam Eaton, who has seemingly had some ups and downs in rehabbing his ankle issues, but — GM Mike Rizzo emphasized — also has not experienced any setbacks. As for second baseman Daniel Murphy, who has yet to play at all following offseason knee surgery, there’s still no timeline for a return.
• A number of other players are already coming off of the DL. The Reds have activated righty David Hernandez and the Mariners have brought back first baseman Ryon Healy. Both were relatively significant offseason acquisitions for their organizations. Meanwhile, the Rays activated infielder Matt Duffy and the Rangers did the same with righty Tony Barnette.