The Rangers optioned Anderson to Triple-A Round Rock on Wednesday.

Anderson hasn't found much success in the majors since joining the Rangers in May, posting a 9.53 ERA and 1.76 WHIP through 17 innings. He'll now head back to Triple-A in order to right the ship, and Brock Burke (hand) will come off the 60-day injured list to fill the opening in Texas' bullpen.

The Rangers reinstated Burke (hand) from the 60-day injured list Wednesday.

Burke has been on the injured list since mid-April with a broken right (non-throwing) hand. He began a rehab assignment May 16, posting a 2.45 ERA and 1.09 WHIP through 11 innings across nine appearances -- seven of which came in Triple-A. The left-hander will presumably slide into a middle relief role with the Rangers, and his return will push Grant Anderson back to Triple-A Round Rock.

Munoz had an MRI and bone scan on his back come back clean, but he received an injection Tuesday to address the lingering soreness, Ryan Divish of The Seattle Times reports.

The right-hander last pitched Sunday in Kansas City and has made just two appearances in June while battling through the back issue. Munoz hasn't officially been declared unavailable, but the Mariners may try to stay away from him for another day or two as he recovers.

The White Sox reinstated Wilson (back) from the 15-day injured list Wednesday.

The right-hander landed on the shelf in late May with a back strain but is ready to rejoin Chicago after making two rehab appearances with Triple-A Charlotte. Wilson has been a reliable high-leverage option for manager Pedro Grifol this year with six holds and a 2.84 ERA, 1.26 WHIP and 19:14 K:BB across 19 innings.

The White Sox designated Hill for assignment Wednesday.

The left-hander joined Chicago on a one-year contract during the offseason, but he struggled in 27 outings with a 5.87 ERA, 2.22 WHIP and 13:10 K:BB over 23 innings. Assuming he clears waivers, Hill could opt for free agency rather than accepting an assignment to Triple-A Charlotte.

Faedo (hip) will throw a bullpen session Thursday, Chris McCosky of The Detroit News reports.

Faedo looks set to throw off a mound for the first time since he landed on the 15-day injured list last week with inflammation in his surgically-repaired right hip. He looks to be closing in on a rehab assignment and shouldn't need too many appearances before being activated since he hasn't missed extensive time.

Coulombe said Wednesday that he underwent an MRI on his left elbow but remains optimistic that he'll avoid an extended stay on the 15-day injured list, Jacob Calvin Meyer of The Baltimore Sun reports.

Coulombe -- who was placed on the IL on Tuesday with left elbow inflammation -- had Tommy John surgery back in 2011 but noted that the pain he's currently experiencing is in a different area of the elbow. The results of his MRI aren't yet known, but the reliever seems confident that he'll be back in the Baltimore bullpen in relatively short order.

The Mariners recalled de Geus from Triple-A Tacoma on Wednesday.

De Geus made four appearances out of the Seattle bullpen earlier this season, allowing one run over 3.1 innings. He'll likely be used mostly in low-leverage situations while he's up with the Mariners.

The Mariners optioned Diaz to Triple-A Tacoma on Wednesday.

Diaz made a spot start in Tuesday's 4-3 loss to the White Sox in place of the injured Bryan Woo (arm), allowing three runs over 5.1 innings in a no-decision. Woo's status remains in limbo, and Diaz could be considered for a call-up if Woo ends up landing on the injured list before his next turn through the rotation comes up.

The Athletics activated Erceg (forearm) from the 15-day injured list Wednesday.

Erceg spent the minimum amount of time on the IL and was able to skip a rehab assignment prior to being activated. He's been terrific in relief for Oakland this season, collecting a 2.86 ERA and 27:8 K:BB across 22 innings as the primary setup man ahead of closer Mason Miller.