The club purchased the contract of left-handed pitcher Felix Doubront from Class A Salem of the Carolina League, lefty Hunter Jones from Triple-A Pawtucket and catcher Mark Wagner from Double-A Portland.
If a player drafted or signed out of high school has five years in the Minor League system, he must be placed on the 40-man roster to stay protected in the Rule 5 Draft. College players who have been in the Minor League system for four years fall under the same category. Doubront, Jones and Wagner are all in that situation.
In addition to the roster maneuvers, the Red Sox signed free agent Paul McAnulty to a Minor League contract. The left-handed hitter has played 124 games in the Major Leagues, all for the San Diego Padres. He is a .208 career hitter. McAnulty had 135 at-bats for the Padres in 2008, hitting .207 with three homers and 13 RBIs.
The signing of the 27-year McAnulty appears to be a depth move. Red Sox general manager Theo Epstein said on Wednesday that Boston's fourth outfielder would likely be a right-handed hitter.
Doubront split last season between two Class A affiliates -- Greenville and Lancaster -- combining to go 13-9. He had a 3.69 ERA and posted 138 strikeouts, third among all Sox Minor Leaguers.
Jones, a reliever, recorded 12 saves in 2008, going 7-3 with a 2.45 ERA, splitting time between Double-A and Triple-A. The lefty -- signed as a non-drafted free agent in 2005 -- converted eight of his 11 save opportunities for Pawtucket.
Wagner hit .219 with 10 home runs and 48 RBIs in 94 games for Double-A Portland in 2008. He led all Eastern League catchers with a .997 fielding percentage and ranked second throwing out 42 percent of attempted basestealers. A right-handed hitter, Wagner was selected in the ninth round of the 2005 First-Year Player Draft.
The moves put Boston's Major League roster at 37.
PITCHERS (20): David Aardsma, Josh Beckett, Michael Bowden, Clay Buchholz, Dewon Day, Manny Delcarmen, Doubront, Devern Hansack, Jones, Jon Lester, Javier Lopez, Justin Masterson, Daisuke Matsuzaka, Hideki Okajima, Jonathan Papelbon, David Pauley, Ramon Ramirez, Virgil Vazquez, Tim Wakefield, Charlie Zink.
CATCHERS (4): Dusty Brown, Kevin Cash, George Kottaras, Wagner.
INFIELDERS (8): Jeff Bailey, Argenis Diaz, Mike Lowell, Jed Lowrie, Julio Lugo, David Ortiz, Dustin Pedroia, Kevin Youkilis.
OUTFIELDERS (5): Jason Bay, Chris Carter, J.D. Drew, Jacoby Ellsbury, Jonathan Van Every.
Ian Browne is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.