Tyler Thornburg (elbow) has already begun throwing bullpen sessions.
Jim Henderson (shoulder) began throwing off a mound last week.
Taijuan Walker will compete with Roenis Elias and Erasmo Ramirez for the fifth spot in the Mariners' rotation.
Rockies general manager Jeff Bridich said Saturday that Boone Logan (elbow) is completely healthy.
Reds manager Bryan Price said that Anthony DeSclafani is "certainly one of the favorites to make our rotation."
A source told Teri Thompson, Bill Madden and Michael O'Keefe of the New York Daily News that Alex Rodriguez is "noticeably thinner and 'massless' than in previous years."
Dustin Pedroia said Saturday that he expects his power to return in 2015 following surgery to repair a left wrist issue that bothered him throughout last season.
More than 200 scouts attended Cuban infielder Hector Olivera's workout last week in the Dominican Republic, per Jesse Sanchez of MLB.com.
The Brewers and Phillies haven't talked about a possible Jonathan Papelbon trade in two days, according to Tom Haudricourt of the Milwaukee Journal Sentinel.
Matt Dominguez has been asked to try his hand at first base this year.
Tom Haudricourt of the Milwaukee Journal Sentinel reports a Jonathan Papelbon deal to the Brewers is "on life support, at best."
Tigers and RHP Al Alburquerque avoided arbitration by agreeing to a one-year, $1.725 million contract.
Twins general manager Terry Ryan said top prospect Byron Buxton could make his major league debut this season.
Darren Wolfson of 1500 ESPN Twin Cities hears Brandon Beachy has chosen a new team and is finalizing some contractual details with the club.
Twins and LHP Brian Duensing avoided arbitration by agreeing to a one-year, $2.7 million contract.