Washington was pleased, however, with how the 33-year-old felt when he arrived at the ballpark Sunday morning.
"His ankle is much better than it was [Saturday] when he left [the game]," Washington said. "Get the swelling out of there a little more. Get treatment the whole day, probably get treatment all day on Monday."
Washington doesn't believe Rios will be able to play in Monday's series opener against the Yankees in the Bronx, but is optimistic about his availability for the remainder of the four-game set.
"Hopefully, we can put a wrap on it on Tuesday and he can be a player, maybe," the skipper said.
Rios is batting .302/.330/.435 on the season with four homers, eight triples and 16 stolen bases in 96 games.
Chris Toman is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.