10:10pm: Rosenthal tweets that the deal between Ayala and the Orioles is officially complete. In a second tweet, he adds that it's a minor league contract with an invite to big league camp that contains multiple opt-out dates.
10:41am: The Orioles have agreed to a deal with reliever Luis Ayala, CBS Sports' Jon Heyman tweets. FOX Sports' Ken Rosenthal reported last night that Ayala had an offer from the Orioles. Ayala is represented by Boston Sports Counsel.
The Nationals released Ayala yesterday. His decision to sign with the Orioles returns him to the team with which he pitched in 2012 and early in 2013, before being traded to the Braves. The 36-year-old posted a 3.27 ERA with 6.0 K/9 and 3.5 BB/9 in 33 big-league innings last year. He has also pitched for the Expos, Nationals, Mets, Marlins, Twins and Yankees in a Major League career spanning parts of nine seasons.
Steve Adams contributed to this post.