Iowa’s defense came up with two second-half safeties, and the Hawkeyes opened the season with a 7-3 win over South Dakota State on Saturday.

Spencer Petras plunged 2 yards for a touchdown with 2:58 left to give 17th-ranked Iowa its first lead, and the Hawkeyes came back from a 15-point deficit in the third quarter to beat Nebraska 28-21.

A thrill ride has been dismantled and an investigation started after the machine appeared to tip and pitch with riders aboard at a popular festival in northern Michigan.