Gomes was called up after Luke Scott was placed on the 15-day disabled list with a stiff back on Thursday, retroactive to June 9. He appeared in two games, allowing one run in three innings of work with four strikeouts.
"I feel like I threw the ball well while I was up here, and I'm back to where I was last year," Gomes said. "Whenever the next opportunity comes, I'll be ready to go. ... It's leaps and bounds compared to where I was a month or two ago. If I keep progressing and stay sharp while I'm down there, hopefully I'll get back up here sometime soon."
Manager Joe Maddon said a key factor in the decision was to have another position player before traveling to Washington and Philadelphia, where the Rays will be without the luxury of having a designated hitter.
The roster move to replace Gomes could happen either Monday or Tuesday.
He added neither third baseman Evan Longoria nor infielder Jeff Keppinger would likely be called up. Both players are currently rehabbing with Durham, as well.
"What we were talking about was to reevaluate them on Tuesday," Maddon said. "Today is Sunday so they've really hardly played and they've been sore, so I doubt they would be the guy on Tuesday."