Rusney Castillo has been diagnosed with a strained adductor muscle in his right thumb.
The injury occurred when he was jammed by a pitch in Arizona Fall League play on October 20. Red Sox general manager Ben Cherington said Thursday that he's not sure whether Castillo will be able to play for Los Criollos de Caguas in the Puerto Rican Winter League.
Orioles declined C Nick Hundley's $5 million option for 2015.
With Matt Wieters coming back and Caleb Joseph around as a cheaper backup, the O's don't need Hundley. The veteran backstop will likely have to settle for a backup job this winter.
Orioles declined OF Nick Markakis' $17.5 million option for 2015.
It was an expected move. The Orioles are working to re-sign Markakis to a long-term deal, though Chris Cotillo of MLBDailyDish.com reported earlier this month that there has been "no substantial progress" made in extension talks. Markakis hit .276/.342/.386 with 14 homers and 50 RBI for the O's this season.
Orioles exercised RHP Darren O'Day's $4.25 million option for 2015.
O'Day has put together a fantastic 2.05 ERA, 0.94 WHIP and 201/48 K/BB ratio over 197 2/3 frames since the beginning of 2012, establishing himself as one of the most reliable relievers in the American League. It's an obvious move for the Orioles.
Orioles exercised LHP Wei-Yin Chen's $4.75 million option for 2015.
It's a no-brainer. Chen has put up a 3.86 ERA and 1.27 WHIP across 86 starts over the last three seasons for the Orioles, proving to be a bargain after coming over from Japan. He'll be a big part of the Baltimore rotation again next season.