Roy Halladay (shoulder) will be activated from the disabled list to start Sunday against the Diamondbacks. Tyler Cloyd had been slated to start, but he was needed in Saturday's 18-inning marathon. Halladay was scheduled to make a minor league rehab start with Double-A Reading on Sunday, but the Phillies have decided to let him make an early return to the big club. Doc went six innings in each of his two rehab starts, so he shouldn't really be limited from a pitch count standpoint.