LAKEWOOD — The top-seed went down on the first day of the Class 5A baseball tournament Friday, and so did the rain.

No. 1 Broomfield lost 5-4 to No. 25 Cherokee Trail in the opening game at Keli McGregor Field at Coca Cola All-Star Park before JT Shank delivered a walk-off single in No. 5 Rock Canyon’s 4-3 win over No. 13 Mountain Vista in the second game following a 2-hour rain delay.

No. 3 Regis Jesuit, meanwhile, beat No. 6 Chaparral 9-1 at All-City Stadium and No. 15 Valor Christian finished off No. 10 Rocky Mountain 12-7 after moving over to All-Star Park due to an unplayable field following a storm that brought heavy rain and hail to some parts of the area.

The second-round games for winners were moved from Friday afternoon to Saturday. For updates, check here.

What Day 1 means for the rest of the tournament?

It means defending champ Broomfield is on the ropes after being the best team in the classification throughout the spring season.

The Cougars (15-11) scored three runs off ace Noah Scott in the first inning en route to beating the Eagles for a second straight year in this double-elimination tournament. In 2022, they handed the eventual champs a hiccup before the Eagles went on to beat Legacy in the finals.

Now, Broomfield (24-2) has no room for error and will have to win at least four straight games to become the first repeat champ in 5A since Rocky Mountain’s four-peat from 2007-2010.

“Everything’s in front of them, and they know that,” Eagles coach Kale Gilmore said. “We just told them it’s all about what they do from here. How they react and how they respond. We have a resilient bunch of guys and a deep pitching staff. I told them if there’s ever a team that I’ve coached that has enough to get through what they’re facing, it’s them.”

Logan Reid logged a win in his fourth consecutive outing on the mound for the Cougars after starting the season 0-2.

Whether it’s just a nice run or perhaps perfect timing for a deep run for the bracket’s 25th seed remains a question.

Cherokee Trail will face Rock Canyon Saturday.

The Jaguars (21-5) won on a walk-off single from Shank after allowing two runs in the top of the seventh to the Golden Eagles.

Before that, the Jags had gotten three runs off 5A’s regular-season ERA leader Will Niles (0.88) before getting the winning hit against reliever Jeremy Bergeron.

It was Rock Canyon’s 10th straight win as part of its first 20-win season since 2015.

At the other site, Regis Jesuit (19-7), behind a one-hitter from freshman Hudson Alpert, had the lone wall-to-wall dominating win on the first day of the tournament, beating Chaparral (19-6-1) by eight runs.

Alpert allowed one hit and one run in seven innings, striking out seven and walking one. Andrew Bell and Brody Chyr homered to back him.

Regis Jesuit is looking for its first baseball title since 2019. It faces Valor Christian Saturday.

Valor Christian (17-8) beat Rocky Mountain (20-6) as 6-foot-2, 235-pound first baseman Keegan Waters drove in a career-high five runs.

Waters, who had just five RBIs all season coming into the game, had a run-scoring single in the second and a two-run double in the third. The Eagles wasted a five-run lead, then broke things open with a four-run sixth.

Valor reached the title game in 2021 before bowing out in consecutive games in last year’s tournament.