Red Sox manager John Farrell said that Betts is the leading in-house candidate to serve as the team's leadoff hitter this season, the Springfield Republican reports. "We’ve got all our in-house candidates and Mookie being the strongest at this point," Farrell said. "But that’s not to anoint him the Opening Day leadoff guy, it’s to say we’ve got a good young player that profiles the position."
Castillo has played in three games for Criollos de Caguas in the Liga de Beisbol Profesional Roberto Clemente in Puerto Rico. He has four hits in 11 at-bats with a walk, two strikeouts, and a stolen base.
Middlebrooks (hand) said he's open to playing a new position, perhaps first base, WEEI.com reports. The third baseman's immediate future is unclear after Boston signed Pablo Sandoval to play third base.