If the St. Norbert Green Knights want a shot at three straight NCAA Division III hockey titles, they'll have to beat their conference rivals one more time.  UW Eau Claire defeated St. John's 4-2 Wednesday night in the opening round of the tournament Wednesday night.  The Bluegolds held off the Green Knights to win the NCHA regular season title, but St. Norbert defeated Eau Claire 3-0 last Saturday night on the road to capture the conference tournament Peters Cup title.  Now they'll play one more time in the NCAA Quarterfinals Saturday night at 7:00 PM at the Cornerstone Community Center.  The winner heads to the Division III Frozen Four in Lake Placid, New York.