WASHINGTON -- Nationals pitcher Yunesky Maya has a sore right elbow, but the injury is not considered serious, according to a baseball source.

Maya pitched in his first game for Criollos de Caguas of the Puerto Rican Winter League this past Friday and allowed four runs in one inning. It was during the first inning against Carolina when he started feeling pain in his elbow. In the second inning, the pain became worse after allowing two more runners to reach base, and Maya was immediately taken out of the game.

It's not known if Maya will fly back to Washington to get re-examined. General manager Mike Rizzo was not available for comment.

Maya has struggled since signing a four-year, $8 million contract in 2010. He has allowed 36 runs in 58 2/3 innings in 41 games. Healthy or not, it will be tough for Maya to be part of Washington's rotation next year.

In other news, left-hander Sammy Solis was named the Arizona Fall League's Pitcher of the Week on Monday.

Solis, who plays for Scottsdale, won his only start last week, pitching four innings that included a 2011 AFL single-game-best nine strikeouts against Phoenix this past Friday. He allowed three hits and walked three in the outing.