The Hawkeye wrestlers traveled to Edinboro last week and had to come from behind to stay undefeated.
Top-ranked Tony Ramos lost 3-2 at 133 pounds, Josh Dziewa was pinned at 141, Brody Grothus lost a major at 149 and Tomas Lira was pinned at heavyweight.
Iowa countered with six wins, including majors at 125 by Thomas Gilman, Derek St. John at 157, Mike Evans at 174 and Sammy Brooks at 197.
“We made it hard on ourselves, but we also had guys that wrestled hard,” said Iowa head coach Tom Brands. “Battling back for the dual win is a testament to their toughness.”