Top Twins prospect Miguel Sano will have Tommy John surgery, La Velle E. Neal III of StarTribune.com reports. Via MLB.com's Rhett Bollinger (on Twitter), the Twins have since confirmed that Sano will miss the entire 2014 season. Sano has had trouble with his ulnar collateral ligament going back to last season, and he injured it on Thursday while making a throw. MLB.com ranks Sano the fourth-best prospect in baseball (with another Twins prospect, Byron Buxton, coming in at No. 1). Sano, 20, hit .280/.382/.610 between Class A+ and Double-A last season. Here are more notes from the American League.
- The Astros do not sound likely to trade catcher Jason Castro anytime soon, Brian McTaggart of MLB.com reports. This offseason, several teams asked the Astros about Castro, but the Astros feel Castro's play and leadership are too valuable to deal right now. "We take all of those elements into account, and we really feel he's a player we can't be without at this point," says GM Jeff Luhnow. Castro, 26, will make $2.45MM in his first year of arbitration eligibility in 2014. He hit .276/.350/.485 in 491 plate appearances last season.
- The Tigers have agreed to terms with eight pre-arbitration players, according to a team release: pitchers Melvin Mercedes, Bruce Rondon, Jose Alvarez and Ian Krol, catcher Bryan Holaday, and infielders Steve Lombardozzi, Francisco Martinez and Hernan Perez. Those players will all likely receive deals near the league minimum. The Tigers now have their entire 40-man roster under contract for 2014.