Chris Archer will now start Saturday on five days' rest. He will be followed by Nathan Karns and Jake Odorizzi, who also will pitch on five days' rest.
Colome -- ranked as the Rays' 10th-best prospect -- arrived to Spring Training expecting to be the favorite to win the No. 5 slot. But he missed a significant portion of camp due to visa problems followed by a case of pneumonia.
The right-hander made his fourth rehab appearance Sunday, pitching for Triple-A Durham and getting the win over Gwinett (Braves).