NORMAL -- Anthony Thompson returned a blocked punt for a touchdown, and Southern Illinois intercepted four passes en route to a 17-0 victory against Illinois State on Saturday.
The Salukis (3-3, 2-1 Missouri Valley), who had just 182 yards of offense, recorded their first shutout since 2009.
Cameron James blocked Patrick Wright's punt, and Thompson ran it 16 yards to the end zone with 5:38 remaining in the first quarter.
Matt Brown was 21 of 40 for 216 yards for the Redbirds (5-1, 2-1), but all four of his interceptions thwarted drives inside the Southern Illinois 35-yard line.
The Salukis salted it away with their most sustained offense of the game, driving 91 yards in 10 plays to Mika'il McCall's 1-yard TD run midway through the fourth quarter.
Tyler Williamson had seven tackles, a sack and interception for Southern Illinois.