The Red Sox took another step toward clearing the decks for the start of spring training by agreeing to a one-year, $9 million deal with center fielder Jacoby Ellsbury, highlighting an afternoon that saw them agree to contracts with all but one of their arbitration-eligible players.

Ellsbury, who made $8.05 million last year, posted, "Done deal!" on Twitter yesterday afternoon, and a source later confirmed his salary.

The 29-year-old is in his final year of arbitration and will become a free agent after the 2013 season. After leading the league in total bases, winning a Gold Glove and finishing second in the MVP voting in 2011, Ellsbury took a step back during an injury-marred 2012, hitting just. 271 with a .682 OPS and four home runs in 74 games.

Yesterday was the deadline for teams to exchange figures with players who filed for arbitration. The Sox began the offseason with nine arbitration-eligible players, and agreed to a one-year, $4.5 million deal with catcher Jarrod Saltalamacchia on Thursday.

After signing Ellsbury, they knocked off six more contracts, agreeing to deals with right-hander Alfredo Aceves ($2.65 million), right-hander Andrew Bailey ($4.1 million), right-hander Daniel Bard ($1.8625 million), right-hander Joel Hanrahan ($7.04 million), left-hander Andrew Miller ($1.475 million) and left-hander Franklin Morales ($1.4875 million). That leaves only left-hander Craig Breslow, who filed at $2.375 million, while the Sox countered at $2.325 million, a difference of $50,000.

The Sox are all but guaranteed of maintaining their streak of avoiding arbitration hearings. Their last hearing came in 2002, when they beat Rolando Arrojo.