The Angels placed O'Hoppe on the 7-day concussion injured list Monday, Jeff Fletcher of The Orange County Register reports.

O'Hoppe had to be removed from Sunday's game against the Athletics after being struck in the head by the backswing of Jacob Wilson, and after going through tests it has been determined he suffered a concussion. He will be eligible for activation Sept. 16, but it's an uncertain timeline to return anytime a concussion is involved. Sebastian Rivero has been added to the roster and is starting at catcher Monday against the Twins, but it will be Travis d'Arnaud seeing the bulk of the action behind the dish while O'Hoppe is out.

Stephenson is not in the Reds' starting lineup against the Padres on Monday.

Stephenson will be on the bench for Monday's series opener while Jose Trevino catches for Nick Lodolo. Stephenson has gone 1-for-5 with a run and two RBI in two games since returning from the 10-day injured list Friday.

The Mets recalled Senger from Triple-A Syracuse on Monday.

He'll serve as the backup catcher behind Francisco Alvarez after Luis Torrens (forearm) was placed on the injured list in a corresponding move. Senger has slashed just .174/.216/.188 in 30 games at the big-league level in 2025.

The Mets placed Torrens on the 10-day injured list Monday due to a right forearm contusion.

According to Laura Albanese of Newsday, Torrens said he suffered the injury while blocking a ball behind the plate in Saturday's 6-3 loss to the Reds, and while he has avoided a fracture, he's sore enough that the Mets decide to make a roster move. Hayden Senger was recalled from Triple-A Syracuse to replace Torrens as the Mets' backup catcher.

Ruiz has been pulled off his rehab assignment with Double-A Harrisburg on Monday due to mild headaches and will rejoin the Nationals in Miami to re-enter concussion protocol, Mark Zuckerman of MASNSports.com reports.

Ruiz's return from the 7-day injured list had seemed imminent, but interim manager Miguel Cairo was non-committal on the 27-year-old's availability to play again this season following his latest setback, per Spencer Nusbaum of The Washington Post. Riley Adams will continue serving as the Nationals' primary catcher while Ruiz is shelved, with Jorge Alfaro backing up Adams.

Atlanta selected Leon's contract from Triple-A Gwinnett on Monday.

With Sean Murphy (hip) done for the season, Leon will serve as the backup catcher behind Drake Baldwin. Leon went hitless in two plate appearances during a brief stint with Atlanta earlier this season.

Atlanta placed Murphy on the 10-day injured list Monday with a right hip labral tear.

Murphy will undergo surgery Thursday and will need about four months of rehab, which puts him on track to be back to full health for spring training, according to David O'Brien of The Athletic. Per Mark Bowman of MLB.com, Murphy said Monday that the hip injury is something that he's dealt with off and on for the last three years, but it had gotten worse lately to the point that an operation became the recommended course of action. With Murphy out for the season, Drake Baldwin and Marcell Ozuna could see even more playing time for Atlanta down the stretch, and Sandy Leon has been called up from Triple-A Gwinnett to serve as Baldwin's top backup behind the plate.

Vazquez (shoulder) resumed taking part in baseball activities over the weekend and hopes to return from the 10-day injured list by the end of the season, the Phil Miller of The Minnesota Star Tribune reports.

Vazquez has been on the shelf since Aug. 8 due to a left shoulder infection, which he had surgically removed a couple weeks later. He hopes to return for a final few games of the season so that he can show he's healthy as he heads into free agency this winter.

MacIver went 1-for-3 with a solo home run in Sunday's 4-3 loss to the Angels.

MacIver entered Sunday in an 0-for-10 skid. The homer was his third of the year and his first during his current stint on the big-league roster, which has featured sporadic playing time as backup to Shea Langeliers. MacIver is batting .200 with a .639 OPS, nine RBI, seven runs scored, three stolen bases and five doubles across 87 plate appearances in the majors this season.

O'Hoppe (head) is being evaluated for a concussion following Sunday's 4-3 win over the Athletics, Jeff Fletcher of The Orange County Register reports.

O'Hoppe exited the game in the top of the seventh inning after being hit in the head by the backswing of Jacob Wilson. He went 0-for-2 with a walk prior to his departure. Angels interim manager Ray Montgomery said that the catcher is "OK," but the team is likely covering all the bases by having him undergo additional evaluation. O'Hoppe can be considered day-to-day for the time being.