The Leathernecks (3-2, 1-1 Missouri Valley) trailed 10-3 at halftime but Kieron James blocked a punt to set Western Illinois up in Coyotes territory, and Lunt threw a 25-yard TD pass to Salomon to tie it. Lunt later hit Charles Chestnut for 39 yards to the South Dakota 1 and Caulton Ray ran it in on the next play to make it 17-10 WIU late in the third quarter.
South Dakota (1-4, 0-2) tied it up quickly. After Jasper Sanders returned the kickoff 55 yards, three plays later Josh Vander Maten found Anthony Williams for 41 yards and the tying score. But Lunt and Salomon answered for the winning points with 7:40 left.
Nikko Watson ran for 138 yards for the Leathernecks.
South Carolina AD Ray Tanner is not "100 percent sure" Saturday's game vs. No. 7 LSU will be played at Williams-Brice Stadium because of devastating floods that hit the state.
UCLA junior linebacker Myles Jack has withdrawn from school and will enter the NFL draft, making the decision just weeks after suffering a season-ending knee injury.
A judge has dismissed simple assault charges against Rutgers wide receiver Leonte Carroo after the woman he allegedly attacked after a football game said she didn't want to testify.
Auburn senior receiver D'haquille Williams has been dismissed from the team.
Colorado coach Mike MacIntyre said he was sorry for getting into a sideline altercation with an assistant coach during a 41-24 loss to Oregon over the weekend.
Alabama coach Nick Saban took exception with the media's outlook on his team prior to Saturday's win at Georgia, lashing out at those who "buried" the Crimson Tide.