Thomas (hamstring) has taken batting practice is now advancing to running the bases, Steve Gilbert of MLB.com reports.

Manager Torey Lovullo said Wednesday that Sewald (oblique) is meeting with the Diamondbacks medical team to determine whether he needs another rehab appearance or if he's ready to return from the 15-day injured list, Theo Mackie of The Arizona Republic reports.

Diamondbacks manager Torey Lovullo said Nelson (elbow) will throw a bullpen session Wednesday, Theo Mackie of The Arizona Republic reports.

Arizona manager Torey Lovullo said after Tuesday's 14-1 win over the Cardinals that he expects Kelly (shoulder) to miss at least one month after landing on the 15-day injured list, Theo Mackie of The Arizona Republic reports. "We're not looking in terms of weeks as what we had hoped for," Lovullo said of Kelly's timetable for a return from a teres major strain in his right shoulder. "So I think the next step up is a month, more than that."

Nelson allowed one run on one hit without retiring a batter in Monday's 5-3 loss to St. Louis.

The Diamondbacks placed Castro on the 15-day injured list Tuesday, retroactive to April 21, with right shoulder inflammation.

Barrosa was optioned to Triple-A Reno on Wednesday.

The Diamondbacks rescinded the option of Frias to Triple-A Reno on Friday and placed him on the 15-day injured list with right shoulder inflammation, Steve Gilbert of MLB.com reports.

Rodriguez (shoulder) was transferred to the 60-day injured list by the Diamondbacks on Wednesday.

Perdomo (knee) underwent surgery to repair a torn right meniscus Monday, Steve Gilbert of MLB.com reports.

Diamondbacks farm director Shaun Larkin said that Lawlar will undergo surgery Thursday to repair a torn ligament in his right thumb and could have a "full return to baseball activity in 8-to-10 weeks," Nick Piecoro of The Arizona Republic reports.

Castillo is day-to-day after tests on his left hand came back negative, Theo Mackie of The Arizona Republic reports.

Diamondbacks manager Torey Lovullo said Thursday that he does not expect Jameson (elbow) to pitch this season, Alex Weiner of ArizonaSports.com reports.