Tomas experienced nausea and was dehydrated Tuesday. He had experienced similar problems the first time the D-backs visited Denver earlier this year.
Tomas said he felt better after receiving some medicine Tuesday night.
Worth noting
• Right-hander Archie Bradley (shoulder tendinitis) made a rehab start for Triple-A Reno on Wednesday. He will make another start five days later before the team decides whether he is ready to come off the disabled list.
Even if he is healthy, D-backs manager Chip Hale reiterated that Bradley will have to pitch well if he wants to reclaim his spot in the rotation.