The ACHA Division I nationals are officially down to four teams now with No. 1 Lindenwood eliminating Liberty tonight by a score of 5-1 and No. 4 Illinois winning in a thriller over No. 5 Oklahoma 3-2 in double overtime.

With those two games now complete, the semifinal matchups are set for Tuesday night:

No. 1 Lindenwood vs. No. 11 West Chester, 5:30 p.m.

No. 2 Penn State vs. No. 4 Illinois, 8:30 p.m.

The two winners will go on to play in Wednesday night's championship game at 7.

Penn State swept the season series from the Illini earlier this season winning 5-1 and 5-4 on Jan. 16 and 17, respectively.

As for the other two teams remaining in the tournament, the Icers split a home and home series with West Chester back in December, winning in a shootout 3-2 at home and losing 6-4 on the road. Penn State has not played Lindenwood since Nov. 2005, when the Icers shutout the Lions in back-to-back games, 2-0 and 1-0.

Your Collegian reporters will be leaving State College early Tuesday to travel to Cleveland, Ohio for Penn State's semifinal game. Check back tomorrow night for updates on the team's showdown with the rival Illini and full tournament coverage.

-Paul