Last weekend was difficult for the nation's elite squads.
Minnesota was swept by Denver. Minnesota-Duluth split with North Dakota. Boston University lost to Massachusetts. Massachusetts-Lowell defeated Merrimack, but lost to Maine.
As a result, Union has become the top team in the power rankings. Ferris State has also jumped to No. 2.
First Five Out: Colgate, Notre Dame, Lake Superior State, Western Michigan and Miami
Series' of the Week: (No. 4) Boston University @ (No. 5) Massachusetts-Lowell, (No. 7) Merrimack @ (No. 8) Boston College, (No. 10) Denver @ Wisconsin, Bemidji State @ (No. 9) Minnesota, Notre Dame @ Miami and Western Michigan @ Lake Superior State.
15. Michigan State (16-12-4)
Sparty is coming off of a split with Michigan. MSU ranks in the Top 20 in both team offense and team defense. The Spartans face Alaska (11-15-4) this weekend.
14. North Dakota (16-11-2)
The Sioux managed a split with the UMD Bulldogs in Duluth. UND is 3-1-0 in their last four games and face Michigan Tech (13-14-3) this weekend.
13. Colorado College (15-11-2)
The Tigers took three points from rival Denver two weeks ago. The following weekend, CC was swept by the Bemidji State Beavers. The Tigers were outscored 8-3 by the Beavers. This weekend Colorado College faces Nebraska-Omaha (13-11-6).
12. Cornell (13-6-6)
Cornell defeated Yale and Brown by a combined score of 9-4 last weekend. The Big Red will face Clarkson (14-13-5) and St. Lawrence (12-15-3) this weekend.
11. Maine (17-9-3)
Senior forward Spencer Abbott leads the nation in points with 49. Maine faces Massachusetts (10-13-5) this weekend.
10. Denver (17-9-4)
The Pioneers swept the Gophers last weekend. However, DU may have lost forward Jason Zucker to injury after a vicious hit to the head by Minnesota's Kyle Rau. The Pioneers play Wisconsin (12-14-2) at the Kohl Center this weekend.
9. Minnesota (19-11-1)
The Gophers were swept by Denver, dropping to 5-6-0 in their last 11 games. Minnesota faces Bemidji State (15-12-3).
8. Boston College (18-10-1)
The Eagles, who have won four straight, play the (No. 4) BU Terriers in the championship of the Beanpot. BC then faces (No. 7) Merrimack over the weekend.
7. Merrimack (15-7-6)
After starting the season 9-0-1, the Warriors are 6-7-5 in their last 18 games. It will not get any easier for Merrimack. The Warriors have a home and home series with (No.8) Boston College.
6. Michigan (18-10-4)
The Wolverines split with Sparty last weekend. Michigan plays Northern Michigan (14-10-6) this weekend.
5. Massachusetts-Lowell (19-8-0)
It is hard to believe that with about a month left in the season, Lowell has not earned any ties. The Riverhawks play (No. 4) Boston University this weekend.
4. Boston University (17-9-1)
The Terriers play (No. 8) Boston College in the championship of the Beanpot and (No. 5) Massachusetts Lowell this weekend.
3. Minnesota-Duluth (19-7-4)
Duluth is coming off of a split with the North Dakota Fighting Sioux. The Bulldogs are 4-3-1 in their last eight games, but have a relatively easier test this weekend against Minnesota State (12-19-1).
2. Ferris State (20-8-4)
The Bulldogs are coming off of a sweep of Notre Dame. The sweep makes Ferris State the first team to 20 wins in the nation. FSU faces Bowling Green (9-18-5) this weekend.
1. Union (17-6-7)
Sophomore goaltender Troy Grosenick leads the nation in both goals against average (1.58) and save percentage (94 percent). Grosenick is a big reason why Union leads the nation in team defense, allowing just 1.80 goals per game. Union faces Princeton (7-12-6) and Quinnipiac (15-10-5) this weekend.