Richards is being shifted to the bullpen, Joe Frisaro of MLB.com reports.
Richards was knocked around for seven runs on seven hits -- including a pair of homers -- in his last start Monday, pushing his ERA for the season to 4.62. The Marlins will give Elieser Hernandez another look in the rotation at Richards' expense, though Frisaro also notes that Richards has drawn some trade interest, and it's possible he ultimately returns to a starting role on another club.