Fenzl earned a decision at 125 and Chyma earned his first win of the season with a major at 174 for the Storm (1-3), who competed for the first time in 12 days. Noah Robinson lost a narrow 5-3 decision at 184.
The Vikings (2-0) earned four bonus-point wins, including three pins, to remain undefeated.
Fenzl won his team-leading 10th match of the season with a 7-4 decision over Trenton Jackson, moving to 10-4 on the season. The freshman has now won six in a row.
Taking the mat for the first time this season, Chyma -- a freshman from Tama, Iowa -- beat Nick Torres 10-1.
The Storm travel to the Buena Vista Invitational in Storm Lake on Saturday. The tournament is set to start at 9 a.m.
125—Clayton Fenzl (SIM) dec. Trenton Jackson, 7-4
133—Freddy Terranova (AUG) tech. fall Jacob Irwin, 16-0 (1:59)
141—Brendan Gould (AUG) dec. Zach Johnston, 7-2
149—Matt Sears (AUG) dec. Jason Kiehne, 8-1
157—Josh Bush (AUG) pinned Anthony Derrick, 1:38
165—Trace Timmons (AUG) dec. Austin Stotts, 7-2
174—Bailey Chyma (SIM) major dec. Nick Torres, 10-1
184—Christos Giatras (AUG), dec. Noah Robinson, 5-3
197—Ethan Benoit (AUG) pinned DeVaughn Scott, 2:04
285—Adarios Jones (AUG) pinned Colby Vlieger, 2:52