The Yankees placed Headrick on the 15-day injured list Tuesday due to a left forearm contusion.

It's unclear when Headrick sustained the injury, as he hasn't pitched since last Wednesday against the Twins. The left-hander will be eligible to be reinstated Aug. 31, though it's unclear if he's expected to be healthy by that point.

The Mariners transferred Thornton (Achilles) from the 15-day injured list to the 60-day injured list Tuesday.

The transaction frees up a spot on the 40-man roster for the addition of Sauryn Lao. Thornton is out for the season after tearing his left Achilles on July 31.

The Mariners optioned Legumina to Triple-A Tacoma on Tuesday.

Legumina has collected an 11.57 ERA since the beginning of July and was knocked around for five runs in a relief outing in Monday's 12-7 loss to Philadelphia. He'll try to get back on track at Tacoma.

The Mariners optioned Kowar to Triple-A Tacoma on Tuesday.

Kowar had allowed four runs over 2.1 innings covering his last three relief appearances. He'll head to Tacoma for now but could get another opportunity in the Seattle bullpen later on this season.

The Mariners selected Lao's contract from Triple-A Tacoma on Tuesday.

Lao was removed from the 40-man roster earlier this season after making one relief appearance, but he's earned his way back on with a 1.37 ERA over his last five outings at Tacoma. The 26-year-old will likely be used in low-leverage spots.

The Astros recalled VanWey from Triple-A Sugar Land on Tuesday, Matt Kawahara of the Houston Chronicle reports.

VanWey has a 6.23 ERA and 5:3 K:BB over 8.2 frames during his time with the big club this season. He's absorbing the 26-man active roster spot vacated by Tayler Scott, who was designated for assignment.

The Astros designated Scott for assignment Tuesday, Matt Kawahara of the Houston Chronicle reports.

Scott was bludgeoned for five runs over 1.2 innings in his lone appearance after the Tigers called him up Monday. He's clearing out to make room on the roster for Logan VanWey.

The White Sox recalled Peguero from Triple-A Charlotte on Tuesday.

Peguero has made one appearance for the White Sox since they claimed him off waivers from the Brewers earlier this month, yielding one run over 1.2 innings. He'll work in middle relief.

The White Sox Sox" data-type="SPORTS_OBJECT_TEAM" data-league-abbreviation="MLB" data-team-abbreviation="CHW">White Sox placed White on the 15-day injured list Tuesday due to a right hip impingement.

White evidently suffered the injury in a relief appearance in Monday's 13-9 win over Atlanta, during which he allowed four runs while recording just one out. The White Sox haven't provided a timeline for his return from the IL.

The Red Sox recalled Bernardino from Triple-A Worcester on Tuesday.

The Red Sox are swapping left-handed relievers, with Jovani Moran heading back to Worcester and Bernardino rejoining the big club. Bernardino has collected a 3.09 ERA but a less appetizing 36:22 K:BB over 43.2 innings with Boston this season.