COLORADO SPRINGS —— Cheyenne Mountain’s fast-paced attack ultimately proved to be too much for Dawson School in a first-round boys’ lacrosse playoff game Wednesday afternoon.

The No. 8 seeded Indians scored six unanswered goals in the third and fourth quarters to blow the game wide open on their way to a 15-6 victory in the Class 4A match.

Cheyenne Mountain (11-5) will travel to No. 1 Wheat Ridge (13-4) Friday for a quarterfinals match.

Dawson ends its season at 11-5.

“We were trying to key on (Casey Rothstein) early on; he was a big transition guy and a really good player,” said Dawson defender Keenan D’Arcy. “We tried to slide to him early, but he would shoot right off the bat.

“I wish we could have that third quarter back.”

Rothstein scored two goals during the barrage and had five total goals for the game.

“We really got into a flow,” said Rothstein, who won 13 of 19 face offs. “We started playing together and found the back of the net.

“We put the goalie on his heels, and the defense in general. We dominated the midfield and just came together in the third quarter in general.”

Dawson’s plan was to play a control offense and keep the ball away from Cheyenne Mountain’s speedy transition game; specifically with Rothstein leading the way. But once things unraveled, Dawson seemed to have no answer.

“(Cheyenne Mountain’s) transition offense is pretty deadly and Rothstein is a great player,” said Dawson coach Peter Devlin. “When he gets in the midfield he’s hard to stop.

“We just tried to stop the bleeding.”

Eli Negrelli’s goal midway through the third quarter pulled Dawson within 8-5 and gave the Mustangs a sense of confidence.

Cheyenne Mountain wasn’t about to let its lead slip away. The Indians scored the final five goals of the third period; the last four in a span of two minutes, 15 seconds.

The Indians scored a goal at the 9:30 mark of the fourth quarter to take a 14-5 lead.

“We wanted to put them on their heels and I think mentally that was a back-breaker for them,” Cheyenne Mountain coach Mike Paige said. “Mentally, I think, they couldn’t recover.”

Cheyenne Mountain scored its goals in bunches. The Indians scored three times in less than three minutes to begin the match.

But Dawson methodically clawed its way back and tied the score at 3-3 at the 5:35 mark of the second quarter. The Mustangs got two goals from Michael Paquette — one on a breakaway — and another from Chase Brown.

Cheyenne Mountain got the lead back 16 second later, however, when Mitch Paige – the coach’s son – found the back of the net. Four seconds later Rothstein scored off of a face off to make the score 5-3 in Cheyenne Mountain’s favor.

Dawson answered with 1:40 remaining in the first half on a Negrelli goal.

It appeared as though that was the way the half would end, but Paige scored with one-tenth of a second remaining to up Cheyenne Mountain’s lead to 6-4.

“That was just like frosting on top of the cake,” Mike Paige said. “It was beautiful.”

Devlin praised his team on a fine season.

“I’m proud of my kids,” he said. “We had a great season. Today just wasn’t our day. Today Cheyenne Mountain was the better team and all the credit goes to them.”

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Cheyenne Mountain 15, Dawson School 6

At Cheyenne Mountain

Dawson School  1  3  1  1  — 6

Cheyenne Mountain  3  3  7  2  — 15

Goals — Dawson: Paquette 3, Negrelli 2, Brown 1; Cheyenne MountainRothstein 5, Paige 4 Sheridan 4, Case 2.

Assists — Dawson:Aleu 2. Cheyenne Mountain: Paige 2, Wheeler 1, Perry 1, Rothstein 1, Redish 1, Feffer 1.

Goalies (Min-Goals allowed-Saves) — Cheyenne Mountain: Robeldo (48 minutes-6 goals allowed-12 saves); Dawson School: Martin (44 minutes-14 goals allowed- 11 saves).