Allgaier wins NASCAR Xfinity race.
JOLIET, ILL.» Justin Allgaier threw a victory bash in front of his homestate fans.
Allgaier pulled away off the final restart and won the NASCAR Xfinity Series race at Chicagoland Speedway.
Allgaier, from nearby Riverton, won for the second time this season in NASCAR’S second-tier series. JR Motorsports had a banner day with Allgaier’s win and the official coronation of Elliott Sadler’s regular-season championship.