BOSTON — It didn’t turn into the shootout many expected. It couldn’t be settled in three periods.

But Michigan hockey’s chance to play for another national championship ended in the place the Wolverines last won one, 24 years ago.

Carter Savoie put back a rebound of his own shot that was initially saved by U-M goalie Erik Portillo with 5:07 remaining in overtime to give Denver a 3-2 victory Thursday night in the Frozen Four at TD Garden.

The No. 1 overall seeded Wolverines (31-10-1) were looking to extend their record with a 10th NCAA title — though they hadn't won a title since winning it all in Boston in 1998. Instead, they’ll be watching Saturday night as the Pioneers (30-9-1) face the winner of Thursday night's other semifinal between Minnesota State and Minnesota for the title. Faceoff is 8 p.m. at TD Center (ESPN).

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U-M spent much of the game on defense as Denver controlled the tempo through three periods. But the Wolverines came out at the outset of overtime generating a few high-percentage scoring chances Pioneers goalie Magnus Chrona continued to thwart, including kicking away a breakaway chance at the pipe to his right near the middle of the 20-minute overtime and a 2-on-1 save on Michigan’s Luke Hughes with a little more than six minutes left.

Just before the final goal, the Wolverines appeared to have a breakaway. However, a player overskated the puck in the Denver zone; it eventually found its way to Savoie in the crease for the unfettered rebound off his initial attempt.

Portillo finished with 30 saves, while Chrona stopped 19 for Denver.

For all the buildup of two of the nation’s top-scoring teams meeting in the national semifinal, the Pioneers and Wolverines eschewed the offense for three hard-hitting, defensive periods of old-fashioned hockey.

Denver came out as the aggressor in the first period, playing both physically and skillfully from the start. The Pioneers generated a few quality scoring chances in close and between the circles in the first 10 minutes that either Portillo stopped, his defenders managed to pinch and prevent a tip-in opportunity or Denver players missed wide of the net.

That changed 11:22 into the period, when the Pioneers opened the scoring. A puck squirted from a scrum across the ice to Denver defenseman Justin Lee for a low, sizzling slapshot through a clearing from the left point. Portillo kicked the shot away with his pads, and opposing center Cole Guttman zoomed in for the rebound but whiffed as U-M’s Matty Beniers closed on him. The puck kept sliding through the crease untouched to a second charging Pioneer, and Brett Stapley buried his 17th goal of the season as Portillo and Beniers collided while trying to move back to their right.

Denver had a 6-0 shots lead after Stapley’s goal, with the Wolverines’ best scoring chance up to that point coming when forward Mackie Samoskevich skated through the crease. But Lee disrupted and dislodged the puck. The Pioneers delivered strong checks throughout the period, and U-M struggled to find any offensive flow while also going offside to halt a few odd-man advantages.

The Wolverines had only four shots by the end of the first and went into the locker room down a goal, but they emerged in the second period amplifying their intensity and turning that into better scoring chances. That included two shots from the blueline stopped by Chrona and another he caught as Michigan’s Johnny Beecher sent a backhand right into the Denver goalie’s midsection.

That attacking mentality paid off 4:03 into the second as the Wolverines tied the game, 1-1. Right wing Nolan Moyle skated up the left side but lost the puck in front of Chrona. But Moyle kept working behind the net along the backboard and tipped it out in front to center Jimmy Lambert, who went top shelf past the Chrona for his sixth goal of the season. His score on his team’s fourth shot early in the second doubled U-M’s shot output from the first period.

But Denver recovered, and both teams skated back and forth the rest of the period, exchanging hard checks along the way. Portillo kept the Pioneers’ nine shots in the period out of the net, while Denver’s defense clamped down and allowed just one more U-M shot the rest of the way and none in the final 8:45 to head into the third period knotted at 1-1.

Michigan entered the Frozen Four with the nation’s third best offense at 4.02 goals per game, while Denver ranked first among the 60 Division I teams at 4.28. The Wolverines ranked ninth in scoring defense at 2.22 goals allowed, with the Pioneers 13th at 2.31 given up a game.

The Pioneers continued to attack early in the third, with Portillo pouncing on one loose puck in the crease surrounded by bodies after making the initial save. But Denver took a 2-1 lead shortly after that when right wing Cameron Wright snuck into the crease and deflected a wrist shot from defenseman Mike Benning over Portillo’s right shoulder. Wright’s tip somehow avoided his teammate Carter Mazur, a Jackson native who managed to hop out of the way while screening Portillo’s vision 5:36 into the period.

But Michigan wasn’t finished. Left wing Mark Estapa dove in front of and blocked a Denver shot, senior right wing Michael Pastujov chased down the puck and zipped up the right wing. Pastujov spotted Thomas Bordeleau cutting up the left side and slipped a pass through to the sophomore center, who shuffled his skates and stick in traffic and flicked a shot into the top right corner to make it 2-2 with 10:51 remaining in the third.

The Pioneers managed a few more quality chances toward the end of regulation, but Portillo stopped them all to send the game to overtime. Denver nearly doubled up the Wolverines in shots through three periods, 26-14, and spent most of the game in U-M's defensive zone. But the Wolverines managed to generate enough of their own luck at both ends to preserve their chance to advance – even if it eventually ended in a return trip home to process another missed opportunity at another national title .

Contact Chris Solari: csolari@freepress.com. Follow him on Twitter @chrissolari.

This article originally appeared on Detroit Free Press: Michigan hockey stunned by Denver in OT, 3-2, in Frozen Four semifinal