The Nationals are not sure whether Arroyo will be a starter or a reliever, but he said last month that he would do anything to help the team win.
Manager Dusty Baker would be happy to have Arroyo contribute.
"This guy brings a knowledge and wisdom to [the art of] pitching," Baker said. "This guy is a hard, hard worker. He texted me the other day and thanked me for asking him to stick with it, because he says he feels great. Who knows? Maybe at some point in time, he may be able to help us this year."
During Spring Training, Arroyo had partial tears in his rotator cuff tendons and said he would retire if the injury required surgery. He took four weeks off from pitching and worked on strengthening the shoulder. When he was ready to pitch again, he threw sidearm for about five weeks. Then he started playing catch and told the coaches he could throw "over the top again."
"I'm open to anything right now," Arroyo said. "On a personal level, I received almost everything that I wanted to get out of this game. At this point it's about being on a ballclub and having an opportunity to win."
Bill Ladson has covered the Nationals/Expos for MLB.com since 2002 and writes an MLBlog, All Nats All the Time. He also can be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.