Ethan Holliday left a lasting impression at 20th and Blake on Friday afternoon, including a few dents on some third-deck seats.

Holliday, the 18-year-old top prospect for the Colorado Rockies, took his first batting practice at Coors Field as a member of the organization before Friday’s series opener against the Los Angeles Angels. He showed the power that has Rockies fans salivating about what might be soon.

Among the places reached by Holliday with home runs included the front row of the third deck and the deepest part of left-center and into the visitors’ bullpen.

“Those are impressive,” said Ethan’s dad, Matt, the former Rockies star who took plenty of batting practice at Coors Field during his six seasons here. “I hit a few out, I think, but nothing like that. I was impressed.”

So was the faction of media members and Rockies personnel who stood near the batting cage to get a glimpse of the player taken with the fourth overall pick in the 2025 MLB draft. Holliday’s smooth swing produced solid contact in his first round of batting practice before he was given the green light to have a little fun and show off his power.

“I was talking to some of the hitting coaches and they were asking me what I was working on,” Ethan said. “I was telling them and they were like, ‘You know what? Just go let it rip and have fun. Don’t worry about that stuff right now.’”

Friday’s showing at Coors Field was a cap on what has been a whirlwind few weeks for Holliday, who went to the Rockies’ facility in Arizona after the July 13 draft to start his journey through the professional ranks. On Aug. 12, he played his first game with the Low-A Fresno Grizzlies, registering the first of his 71 at-bats with the team. He finished with a .239/.357/.380 slash line along with a pair of home runs and six RBI, helping the Grizzlies earn a spot in the postseason.

“You’re playing with adrenaline. You’re playing with fire every game and every out matters,” Ethan said of Fresno’s run to the postseason. “Unfortunately, we lost two games (in the postseason, eliminating the Grizzlies), but it was a great experience for everybody to get out there and play a different style of ball.”

That experience is something the Rockies hope is just another building block for Ethan on his way to Coors Field. On Sunday, those building blocks will continue to form as he heads back to Arizona to be a part of the Rockies’ instructional league.

“My checklist (in Arizona) would probably be just take it day by day and focus on my approach and my plan every day,” Ethan said. “I have a mission to be the best version of myself every single day.”

That’s something that hasn’t changed for Ethan, despite the switch from high school baseball in Oklahoma to professional baseball wherever the Rockies send him.

“I think those are conversations and preparation that has happened over the last three or four years,” Matt said. “The mental part of the game is extremely important, how you handle failure and how you bounce back and the process, plus how you deal with results and controlling what you can control.

“We spent a lot of time discussing and talking about that. It’s not easy, but I think he’s prepared as much as an 18-year-old could be prepared.”

With the Rockies entering Friday’s game with a franchise-worst 112 losses this season, Ethan’s arrival at Coors Field, even for a batting practice session, breathes hope into what could be in the next couple of years as Ethan and 2024 first-round draft pick Charlie Condon could anchor a next generation of Blake Street Bombers.

It’s not time yet, but Matt believes the lessons learned now will help Ethan reach that goal.

“Just the experience of facing professional pitchers and older kids and guys with great arms six days in a row and those guys throwing mid- to upper-90s, there’s nothing that can replicate that besides experience,” Matt said. “It’s been good so far. He’s learned and is learning. The more you see that kind of stuff, the more comfortable you are.”

Based on what was seen on Friday, a comfortable Ethan Holliday hitting at Coors Field could be a thought that will make opposing pitchers very uncomfortable.

“All this still thrills me every single day,” Ethan said. “You’re starting to work toward a goal of being here. I definitely think about that. It’s definitely cool to be out here next to all of these guys and kind of want to be teammates with them in the next couple of years.”