The Nationals released Rivera (elbow) on Saturday, Jessica Camerato of MLB.com reports. Rivera went 3-for-14 in four games after signing with the Nationals on July 16. The catcher had been on the 10-day injured list and it's unclear when he'll be ready to play again, though that may be moot if no team signs him.
Rivera was placed on the 10-day injured list Tuesday with a right elbow contusion, Dan Kolko of MASN Sports reports. Rivera last played Sunday against the Cubs, so it seems likely that he suffered the elbow injury at some point during that game. He'll be eligible to come off the injured list Aug. 12 against the Mets, though it's not clear at this point how long he may need to recover. Fellow catcher Riley Adams was recalled from Triple-A Rochester in a corresponding roster move.
Rivera isn't starting Friday against the Cubs, Mark Zuckerman of MASNSports.com reports. Rivera could see additional playing time after Yan Gomes was traded away Friday, but he'll remain out of the lineup for the series opener against the Cubs. Tres Barrera will start at catcher and bat sixth.
Rivera is out of the lineup for Sunday's game against the Padres. After signing with Washington on Friday, Rivera picked up starts at catcher in both of the first two games of the series, going 2-for-8. Rivera will sit Sunday in favor of Tres Barrera, but the Nationals could deploy the two in a timeshare at the position until one of Yan Gomes (oblique) or Alex Avila (calf) returns from the injured list.
Rivera agreed to a major-league deal with the Nationals on Friday, Jesse Dougherty of The Washington Post reports. The veteran catcher elected free agency after being designated for assignment by Cleveland in early July, but he'll join a new team after being a free agent for a couple weeks. Yan Gomes (oblique) and Alex Avila (calf) are both on the injured list, so Rivera will split time behind the plate with Tres Barrera.