SAN DIEGO -- Padres catcher John Baker, shortstop Everth Cabrera, third baseman Chase Headley, outfielder Will Venable and pitchers Luke Gregerson, Joe Thatcher, Clayton Richard and Edinson Volquez all filed for salary arbitration on Tuesday.The 133 Major League players who filed and their respective clubs will exchange 2013 salary proposals by Friday. Arbitration hearings will be scheduled to take place between Feb. 4-20, but players and clubs can reach deals before then to avoid what can be an uncomfortable process. In November, the Padres and first baseman/outfielder Kyle Blanks avoided arbitration by agreeing to a $605,000 deal for 2013. Headley, who made $3.475 million in '12, is due for a substantial raise with a salary that could exceed $8 million after he finished fifth in National League MVP voting and led the league with 115 RBIs. He won the Silver Slugger Award and Gold Glove Award this offseason. The raises the Padres' eight arbitration-eligible players are due -- combined with contract extensions for several players made last season -- will push the club's Opening Day payroll to about $65 million. That's up from $55 million on Opening Day 2012. "It's up significantly, double-digits," Padres executive chairman Ron Fowler said on Tuesday. "There's room to add. We have a budget, but there's still room."