Infielder Jonathan Herrera is "getting close" to returning to the Rockies, Tracy said. Herrera went 1-for-5 as the designated hitter in a rehab game with Double-A Tulsa on Tuesday and was slotted to play shortstop in the Drillers' game on Wednesday.
Pitcher Juan Nicasio, who was placed on the disabled list with a strained left knee on June 3, threw a "very good" bullpen session on Tuesday, Tracy said.
Drew Pomeranz threw six no-hit innings for Triple-A Colorado Springs in an 8-2 win on Tuesday night. His velocity was up and his delivery and command were better, according to Tracy.
"A guy goes out there and starts doing that on any kind of a regular basis, he's making a statement for himself, that's for sure," Tracy said.