Northwestern visits St. Ambrose in the quarterfinal round of the N-A-I-A national playoffs. St. Ambrose advanced with a first round win over the University of Mary of North Dakota and coach Todd Sturdy says his team has been riding momentum the last half of the season.Northwestern coach Orv Otten says every team at this point has momentum.Otten says both teams finished the season in must win situations just to get to the post season as they both has losing records early on.Northwestern advanced with a first round upset win over Benedictine of Kansas.