Joe Colborne and Denver swept No. 2 North Dakota

The clash of the titans in Denver did not disappoint, but the third-ranked Pioneers were able to pull off a sweep of No. 2 North Dakota behind some outstanding goaltending from junior Marc Cheverie. On Friday, he made 34 saves and pitched his nation-leading fourth shutout of the season, while freshman forward Drew Shore provided the game's only score. North Dakota scored the first two goals on Saturday, but DU would rally thanks to a phenomenal effort from sophomore forward Joe Colborne. He scored twice early in the second and then provided the primary assist on a goal by junior forward Kyle Ostrow that would prove to be the game-winner. Colborne had several other chances and finished the game having put 11 shots on goal. UND had the apparent game-tying goal waived off with 43.9 seconds left in the game, and Denver held on for victory in a game where all five goals were scored with a man advantage. Both games drew capacity crowds of greater than 6,000.

Cheverie - a 2006 draft pick of the Florida Panthers - has been undisputedly the most-impressive goaltender in college hockey this season. He stands 7-0-0 and holds healthy leads among all DI players in both goals-against average (1.19; next best is 1.45) and save percentage (.961; next is .943).

The other series between ranked teams over the weekend saw 14th-ranked Notre Dame cool off one of the hottest teams in the country, No. 6 Michigan State. On Thursday, both defenses fluorished and the result was a 1-1 draw that eventually saw the Fighting Irish prevail in the shootout. The rivals - who played in the quarterfinals of the NCAA tournament in both 2007 and '08 - then faced off on Sunday in one of the venues that will host an NCAA regional this season, the Allen County War Memorial Coliseum in Fort Wayne, Ind. In that contest, MSU had a 28-16 advantage in shots, but Notre Dame posted a 4-1 victory that was highlighted by senior defenseman Kyle Lawson recording a pair of assists and finishing with a plus-4 rating.

Fifth-ranked Cornell had a big weekend of action and split its games against ranked squads. The Big Red scored the game's first four goals and eventually won by a 5-2 score over 19th-ranked Princeton on Friday. Senior Blake Gallagher (2-1) and junior Joe Devin (0-3) led Cornell offensively and both finished with plus-3 ratings, while senior Cam MacIntyre had both goals for the Tigers. On Saturday, No. 13 Quinnipiac took control early and survived a pair of late goals by Cornell to take a 3-2 road victory that would propel the Bobcats to a program-best national ranking of ninth this week. QU then stayed hot, scoring five times in the second period - including two markers from freshman defenseman Loren Barron - en route to a 5-1 victory against Princeton on Wednesday. It was Quinnipiac's seventh consecutive victory and gave the Tigers a four-game winless streak (0-3-1).

One team to top Princeton during that stretch was Colgate. On Saturday, the Tigers tied the game at 18:36 of the third, but junior forward Francois Brisebois netted his second goal of the game two minutes into overtime to give the Raiders a 5-4 victory. Princeton - which had won six in a row against Colgate - held a hefty 47-27 advantage in shots and got a pair of goals from Dan Bartlett. That propelled the Raiders into this week's national rankings at No. 20, but now-No. 7 Cornell scored twice in the final six minutes to earn a 4-2 win over Colgate on Tuesday night. CU, which was playing a (different) ranked team for the fourth consecutive game, took 10 more shots (30-20) than the Big Red.

Also on Tuesday, No. 10 Massachusetts trailed 18th-ranked Vermont 2-1 in the second before scoring five straight goals for a 6-2 win. Sophomore forward Casey Wellman had a hat trick, while junior forward James Marcou assisted on five of the UMass goals. On the same night, Providence upset UMass Lowell, which had moved up to No. 3 in this week's rankings, by a 4-2 score. Senior defenseman Mark Fayne led the Friars, setting up PC's first three goals and scoring its final tally to finish with a plus-2 rating.

Top-ranked Miami extended its unbeaten streak to eight in a weekend series at Western Michigan. On Friday, the RedHawks killed off all seven Western Michigan power plays, netted a pair of shorthanded goals, limited the Broncos to only 15 shots on goal and got a shutout from sophomore Cody Reichard in a 3-0 decision. The teams generated many more offensive opportunities on Saturday (73 combined shots, as opposed to 39 on Friday), but strong goaltending by both MU's Connor Knapp (29 saves) and WMU's Riley Gill (42 saves) had the game end in a 1-1 tie. Miami then took the shootout.

In another CCHA series, Northern Michigan put together a sweep of 12th-ranked Nebraska-Omaha. The Wildcats - which earned a win and a tie on the road agaisnt Notre Dame the previous weekend - got a pair of goals on Friday from sophomore forward Justin Florek en route to a 5-1 win. In the finale, the game was tied 3-3 in the third before NMU netted three straight to close out the scoring. Junior forward Mark Olver had two goals and an assist and was a plus-3.

No. 10 Alaska looked to be on its way to being swept, as well. The Nanooks lost 4-3 at Lake Superior on Friday and were down 2-0 heading into the final period the next night, but senior center Dion Knelsen scored twice in the third and junior defenseman Bryant Molle did so with 49 seconds left in OT to salvage a 3-2 win. Two other ranked teams also had to settle for splits over the weekend in conference action. No. 15 Wisconsin lost by a 4-1 score to St. Cloud State on Friday, but rebounded for a win by the same score the next evening. No. 16 Michigan lost 4-2 to Bowling Green before prevailing 4-1 in the series finale.