There still are two weeks of negotiating time remaining before the hearings will be held Feb. 1-20, giving teams plenty of time to avoid a hearing. Of the 43 salary exchanges last year, only six eventually went to a hearing.
Walker, 33, is expected to play a backup role at three positions -- first, second and third base -- with the signing of second baseman Marcus Giles as a free agent.
Walker played 44 games with the Padres in 2006 after arriving at the trade deadline in a deal with the Chicago Cubs. He batted .282 for the Padres, .278 overall, with nine homers and 53 RBIs. He's a .289 career hitter.
The Padres' two other potential arbitration cases were settled when shortstop Khalil Greene agreed to a $2.25 million contract for 2007, and catcher Josh Bard accepted a $1.05 million deal.
Greene, whose salary was $405,000 last season, can make an additional $50,000 each for 550, 575 and 600 plate appearances. He also can earn $50,000 for making the All-Star team, $50,000 for winning a Gold Glove, $25,000 for winning a Silver Slugger Award, $50,000 for winning an LCS MVP award and $100,000 each for winning the league MVP or World Series MVP awards.
Bard has the same incentives for making the All-Star team and winning the Gold Glove and Silver Slugger awards and the MVP awards for the league, LCS and World Series. Both Greene and Bard also can earn $50,000 for finishing second in the MVP voting and $25,000 for third.
Lyle Spencer is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.