The Angels placed Mederos on the 15-day injured list Sunday due to right shoulder inflammation.

Mederos made his third start of the season in Saturday's 12-1 loss to the Cubs and was the pitcher of record after yielding six earned runs on four hits and two walks across four innings. Following the game, Mederos told Jeff Fletcher of The Orange County Register that his shoulder felt off toward the end of his start, and the Angels decided to deactivate him while they look to glean more information about the injury. Mederos is expected to undergo an MRI in the coming days before the Angels provide a potential timeline for his return. Caden Dana delivered a 13-strikeout gem in his most recent start with Triple-A Salt Lake on Friday and could be a top candidate to step in for Mederos the next time his turn in the rotation comes up.

The Angels placed Fulmer on the 15-day injured list Sunday due to right elbow inflammation.

According to MLB.com, Fulmer sustained the injury while throwing a changeup during his relief appearance in Saturday's 12-1 loss to the Cubs. Before departing, Fulmer was charged with six earned runs on seven hits and one walk over 1.1 innings, bringing his ERA up to 5.83 for the season. Though the Angels are labeling his injury as inflammation, Fulmer will undergo further testing as the team looks to rule out a more significant issue to his elbow, per Jeff Fletcher of The Orange County Register.

The Angels recalled Silseth from Triple-A Salt Lake on Sunday.

Though he's made most of his appearances in the big leagues the past three seasons as a starter, Silseth transitioned to a full-time relief role at Triple-A in late July after returning from a stint on the 7-day injured list. He's thrived out of the bullpen for Salt Lake, tossing 8.2 scoreless frames while striking out 13 over his last nine appearances. The right-hander will likely be deployed by the Angels in lower-leverage spots initially but could work his way up the bullpen depth chart quickly if he excels early on with the big club.

The Brewers optioned Rodriguez to Triple-A Nashville on Sunday.

Rodriguez was called up by Milwaukee on Wednesday and will return to Triple-A after giving up four runs over three frames out of the bullpen during Saturday's 7-1 loss to the Giants in his second MLB appearance of the season. He's now surrendered seven runs across his two long-relief outings for Milwaukee.

The Blue Jays recalled Schultz from Triple-A Buffalo on Sunday.

The 27-year-old righty has produced a 4.56 ERA and 1.44 WHIP over 23.2 innings in 12 appearances (two starts) with Toronto this season. He'll provide the Blue Jays with a multi-inning bullpen option heading into Sunday's game against the Marlins.

The Blue Jays optioned Fluharty to Triple-A Buffalo on Sunday.

Fluharty pitched the previous two days, so the Blue Jays will send him to Buffalo in favor of a fresh bullpen arm in Paxton Schultz. Over 51 appearances with the big club this season, Fluharty has netted a 4.94 ERA, 1.27 WHIP and 48:24 K:BB in 47.1 innings while collecting four wins, four holds and one save.

The Astros recalled Rooney from Triple-A Sugar Land on Sunday.

Houston optioned AJ Blubaugh to Triple-A to make room for a fresh bullpen arm. Acquired from the Marlins on Aug. 3, Rooney will be joining the big club for the second time this month after failing to make his MLB debut during his initial stint with Houston.

Seymour is slated to start Monday's game against the Guardians in Cleveland, Marc Topkin of the Tampa Bay Times reports.

At least for one turn through the rotation, Seymour will take over the starting role that was vacated by Joe Boyle, who was optioned to Triple-A Durham on Friday. Since being called up from Triple-A on July 31, Seymour has made five relief appearances, but he covered 3.1 innings Aug. 15 in San Francisco and three frames in his most recent appearance Tuesday against the Yankees, so he should be reasonably stretched out ahead of his first MLB start. The 26-year-old lefty had previously been serving as a full-time member of the rotation at Durham, producing a 2.62 ERA, 1.14 WHIP and 104:20 K:BB in 86 innings.

The Cardinals optioned Veneziano to Triple-A Memphis on Sunday.

Veneziano will cede his spot in the St. Louis bullpen to John King (oblique), who was activated from the 15-day injured list. After being called up from Memphis last Sunday, Veneziano made two relief appearances for the Cardinals and gave up two earned runs on three hits and one walk over four innings.

The Cardinals activated King (oblique) from the 15-day injured list Sunday.

St. Louis optioned reliever Anthony Veneziano to Triple-A Memphis to clear room in the bullpen for King, who had been shelved since July 30 due to a left oblique strain. Prior to going down with the injury, King had notched two wins and two holds while delivering a 5.18 ERA, 1.63 WHIP and 24:13 K:BB across 41.2 innings in 43 appearances.