Rockies' No. 17 prospect Eaton a quick study in Arizona Fall League

This story was excerpted from Thomas Harding’s Rockies Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

SCOTTSDALE, Ariz. -- Left-hander Konner Eaton, the Rockies No. 17 prospect, arrived for Arizona Fall League play with a student’s mentality.

“My goal is to come out here with open ears, bounce ideas off other guys’ heads -- especially some of the coaches here,” said Eaton, a sixth-round pick in 2024 from George Mason University who turns 24 on Nov. 30.

Call Eaton a quick study.

Eaton, who spent the Minor League season with a Double-A Hartford team (5-3, 4.46 ERA in 23 starts) that went to the Eastern League playoffs, has pitched nine innings over five appearances (1 start) without giving up an earned run (2 unearned runs) for the Salt River Rafters in AFL play. Eaton has six strikeouts against two walks. His latest outing was two scoreless innings with three strikeouts to one walk in the team’s 21-5 loss to Mesa on Thursday.

What Eaton is applying on the mound is more important than his glowing stats.

“There are several layers to it, but primarily we’ve made some adjustments to his daily catch-play routine to continue to gain awareness of where his body is in space,” Rockies director of pitching Matt Daniels said. “He has a large amount of range of motion, and that particular trait can take a longer time to gain full control of. The thought is better control of moving parts in space, the higher likelihood of throwing more strikes.”

During the regular season, Eaton struck out 103 in 107 innings, but also walked 61. In addition to improving his strike-throwing, Eaton wanted to show stamina over a longer season, since he hopes to make his Major League debut in 2027 -- even though he doesn’t have to be protected on the 40-man roster until after the season.

The year at Hartford presented difficulties.

“I had a great start to the year and maintained that through the middle of the season, but I had some family issues back home,” said Eaton, who added that things are better. “I was able to get back home for a couple of days, then everything started to spiral a little bit. It was a big learning opportunity to be able to deal with adversity. And I bounced back from a little rotator cuff strain, so a lot of ups and downs.”

Eaton earned the Rockies’ Rick Matthews Minor League Pitcher of the Year Award in 2025 (149 strikeouts to 52 walks in 140 innings at High-A Spokane and Hartford) while throwing a fastball, slider and changeup. This year, he added a cutter, a sinker and a sweeper, the last of which he curtailed during Hartford season but wants to finish developing.

Key Fall League adjustments, Daniels said, are a slight change to the changeup grip and throwing the slider harder with and with less break. The goal is to turn Eaton into a much-needed starting rotation option.

“Left-handed starting pitching is at a premium, so we take pride in developing that,” said Jerry Sullivan, who is a Rafters’ pitching coach after holding the same role with Hartford. “With Konner, it’s a little bit of a fast track.

“We’re getting him work out of the bullpen in the Fall League with a command focus. When we move guys quickly with that kind of an arsenal, there’s always a grace period when it comes to command. For us, it’s making sure he has the pitches to compete at the big league level while maintaining our core beliefs -- being able to attack the strike zone without running up many walks.”