Gonzalez will oppose Tampa Bay right-hander Jake Odorizzi, who was supposed to start today before being scratched.
Manager Buck Showalter hasn't revealed how the rotation is impacted for the upcoming series against the Red Sox at Fenway Park. He's scheduled to meet with reporters Wednesday at 11 a.m., at which point he will disclose his plans.
Chris Tillman was supposed to start Wednesday against the Rays, but he most likely will replace Bud Norris as Friday's starter. Ubaldo Jimenez was supposed to start Saturday, followed by Wei-Yin Chen on Sunday and Miguel Gonzalez on Monday.
The postponement allows the Orioles to miss left-hander David Price, who's been pushed back to Thursday's game against the Yankees at Tropicana Field.