Chamberlain, taking part in early workouts at the Yankees' minor league complex, has already thrown off the mound four times. His next session will be Monday, and then spring training starts Friday.
Chamberlain will part of a rotation that includes CC Sabathia , A.J. Burnett , Chien-Ming Wang and Andy Pettitte .
"I'm excited that they wanted me to be in a starting role," Chamberlain said. "You just prepare like you're going to get 30 starts and that's the mind-set you got to have set in."
RED SOX: Jason Varitek and Boston have finalized a $5 million, one-year contract.
The club announced the signing, one week after reaching a preliminary agreement with their catcher and captain. Varitek will be starting his 13th major league season, all with Boston.
The contract includes $5 million this year, a player option of $3 million or a team option of $5 million for 2010.
DODGERS: Pitcher Randy Wolf and Los Angeles agreed to a $5 million, one-year contract.
A 32-year-old left-hander, Wolf was a combined 12-12 with a 4.30 ERA in 2008 with San Diego and Houston, which acquired him in July for minor league pitcher Chad Reineke .
DIAMONDBACKS: Relief pitcher Tom Gordon agreed to a $500,000, one-year contract with Arizona.
The 41-year-old right-hander, a member of last season's World Series champion Philadelphia Phillies, was 5-4 with two saves and a 5.16 ERA in 2008.
RANGERS: Right-hander Jason Jennings and Texas have agreed to a minor league contract that includes an invitation to major league spring training.
The deal gives Jennings another chance to rebound from elbow problems that have plagued him since he returned to his home state after six seasons with the Colorado Rockies.
BLUE JAYS: Left-hander Ken Takahashi finalized a minor league contract with Toronto and was invited to major league spring training camp. The 39-year-old has spent his entire 14-year career in Japan.
METS: Reliever Pedro Feliciano and New York agreed to a one-year contract worth $1,612,500 and avoided salary arbitration.