The Marlins placed Bender on the 15-day injured list Tuesday due to a right tibial stress reaction.

The right-hander made his last appearance Sunday in Boston and fired a scoreless inning to pick up a save, but he'll now be unavailable for at least the next couple weeks. Calvin Faucher, Ronny Henriquez and Lake Bachar should continue to share closing duties for Miami while Bender is sidelined.

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 Phillies designated Walker for assignment Tuesday.

The left-hander has been at Triple-A Lehigh Valley since being acquired from the Blue Jays in May, but Walker will lose his place on the Phillies' 40-man roster without getting a look in the majors. He made 23 relief appearances at Lehigh Valley and had a 4.50 ERA, 1.42 WHIP and 22:12 K:BB across 26 innings.

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 Phillies optioned Hoffman to Triple-A Lehigh Valley on Tuesday.

The right-hander was promoted Monday and will return to Lehigh Valley after giving up three runs over an inning against the Mariners in his MLB debut. Jose Alvarado (suspension) was reinstated to round out Philadelphia's active roster.

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.