VERMILLION, S.D.—Southern Illinois running back Javon Williams Jr. ran for 107 yards and four touchdowns while the Saluki defense forced five turnovers in rolling past South Dakota 48-28 Saturday inside the DakotaDome. Williams Jr., a wildcat back for SIU, scored all four touchdowns in the first half and was part of a ground game that compiled 334 yards against the Coyotes. South Dakota quarterback Austin Simmons completed 22 of 34 passes for 226 yards and accounted for all three of the Coyotes’ offensive touchdowns. But he was intercepted three times and lost two fumbles.nnIt was the first win for the Salukis in Vermillion in three tries as they improved to 4-4 overall and 2-2 inside the Missouri Valley Football Conference. South Dakota fell to 1-3 at home, 3-5 overall and 2-2 inside the Valley. South Dakota returns to action next Saturday in a 1 p.m. kickoff at Western Illinois in Macomb.