Last year, Alvarez had just two brief stints in the Majors, collecting four at-bats, and he wasn't called up when the rosters expanded in September.
Now, Alvarez faces long odds to make the club, especially with the Orioles' recent signings of Michael Bourn and Craig Gentry to Minor League contracts. Bourn, however, is expected to miss four weeks with a broken right ring finger.
"I'm grateful for the opportunity to be here," Alvarez said. "I think I have the chance to be here and compete. I just want to stay healthy and compete."
While Alvarez's potential as a big league hitter is questionable, his arm isn't, and the Orioles have toyed with converting him to the mound.
"They have approached me about becoming a pitcher," Alvarez said. "For the moment, I'm a hitter. That's where my mindset is right now, to be a hitter. The things that I've done so far are as a hitter. I look at myself as a hitter right now."
Alvarez pitched in Cuba as a teenager, something he said was common, but he hasn't since then.
The Orioles have had recent success in converting position players into pitchers. Mychal Givens, a high Draft choice who struggled offensively in the Minors, moved from the infield to the mound in 2013, and he was in the Majors pitching successfully in '15.
Alvarez hasn't spoken to Givens about a possible conversion. "No, I have not spoken with him about it," Alvarez said. "Right now, pitching is not in my mind. That's something that has not crossed my mind, yet."