OMAHA, Neb. -- Two goals scored on the power play and 30 saves by Frank Slubowski helped Western Michigan upset No. 4 Omaha 2-1 at CenturyLink Center on Friday night.

Colton Hargrove and Taylor Fleming each tallied goals set up by Frederick Tiffels, who finished with two assists. WMU went 2-for-3 on the power play and were 4-for-5 on the penalty kill. Seven of Slubowski's saves came on the penalty kill.

The Broncos struck first at 10:47 in the first period. Chris Dienes got the puck deep and Tiffels dug it out of the corner. He then found Hargrove all alone in the right circle, who snapped it into the net for his 12th of the season.

WMU added its second power-play tally to extend the lead to 2-0 at 19:19 in the second period. Tiffels once again set the play up as he found Fleming alone in the right circle for his second tally of the season.

The shutout was spoiled when Omaha netted a goal with 1:55 left in the third period. UNO was on a power play and pulled Massa from net to gain a six-on-four advantage. Grant Gallo fired a shot and Slubowski made the initial rebound but Jake Guentzel dove and batted in the rebound for his 10th goal of the season.

The Broncos were outshot 31-29 but limited the Mavericks to just six shots in the third period.