"It went great," Guthrie said. "Roughly 45 pitches. I was able to throw all my pitches to all the locations without any pain. It was more letting it go and feeling normal. Don't quote me on exactly what will happen Tuesday, but I'll definitely be throwing in some way shape or form, whether it's an extended bullpen or to hitters."
Throwing to hitters is the ideal next step for Guthrie, setting him up for a subsequent decision about whether he's ready to return to the Majors or if he needs a brief a rehab assignment in the Minors.
"He's not going to throw to hitters until we pass the bullpen test where we're eliminating language using the terms 'tentative,' 'didn't completely feel just right,' or 'just kind of felt it on a couple pitches,'" Tracy said before Guthrie's bullpen session Sunday. "We have to pass this test first, and then we have to throw live batting practice, and quite frankly for me, we're getting very close to the point where we may have to make a rehab start before we just run out here to the big league mound."
Tracy is adamant about not being put in a position of sending a starter to the mound and having to pull him after two innings when something doesn't feel right. His bullpen has met the challenges of often throwing more innings than the starters, but the pattern cannot continue.
"There has to be a turnaround there," Tracy said. "We're still searching, there's no getting around that."
Among those who might help are Josh Outman, who threw 36 pitches (25 for strikes) over two innings in his rehab assignment in Double-A Tulsa on Thursday and was slated to throw in back-to-back games Sunday and Monday.
Outman could be a candidate to join the club if all goes well with his outings, and depending on how things shake out over the next few days at the Major League level. Outman would be a fresh left-handed relief arm, potentially spelling some of the inconsistency that plagued the 'pen on the homestand.
Carlos Torres pitched his first inning for the Rockies on Saturday night, putting down the Braves on nine pitches in the eighth, and he pitched a perfect ninth Sunday on 12 pitches. He was recalled from Triple-A on Friday to be available for long relief and potentially to take a start next week.
"He's a candidate to start a game," Tracy said. "He's also a candidate to stay and pitch and be that long man/spot starter type of guy and give us a chance to see more of his stuff. Over the course of the next 72 hours, there's going to be some decisions made."
The Rockies are also considering calling up Christian Friedrich or Alex White from Colorado Springs. Friedrich is scheduled to pitch Wednesday in Colorado Springs, and he has been the most effective starter there, but he is recovering from a hamstring injury and is still lengthening out. White was scheduled to pitch Sunday, but was scratched to keep him available to the Rockies.