Logan Morrison filed a grievance against the Marlins after they demoted him last month, Amy K. Nelson of ESPN.com reports. Though the Marlins have maintained that they demoted the 24-year-old left fielder for baseball reasons, Morrison and agent Fred Wray are arguing that the demotion was a form of discipline without just cause.
"I'm doing this because I'm standing up for what's right," Morrison told Nelson. "If I thought it was because of my performance on the field, then I wouldn't be filing a grievance."
Morrison missed an event with Marlins season ticket holders before his demotion and not long afterwards Marlins president of baseball operations Larry Beinfest said that the outspoken Morrison needed to learn more about "being a Major Leaguer." Morrison, who spent ten days in the minors, filed the grievance on August 25th, according to Nelson.
Morrison wants big league pay for the time he spent in the minors, according to Joe Capozzi of the Palm Beach Post (on Twitter). He can still obtain a full year of service time in 2011, so the demotion didn't affect his path to arbitration or free agency.