What won the race: After leading the first 30 laps, polesitter Ray Guss Jr. of Milan, Ill., won a late duel with Jason Rauen of Farley, Iowa, for a 40-lap Memorial Day victory. Rauen caught Guss in traffic to take the lead on lap 31, then a caution set up a late dash to the checkers. They swapped the lead on the restart before Rauen bobbled in turn two on the final lap, opening the door for Guss.

Key notes: Guss, a two-time series champion, has 30 career series victories, second on the all-time list. ... Four of them have come at Boone. ... He's the fifth winner in five series events. ... Matt Ryan won the $250 Sunoco Race Fuels drawing. ... Boone hosted its 41st series event.

On the move: Andy Eckrich of Oxford, Iowa, charged from the 13th starting position to finish fourth.

Winner's sponsors: Guss’s No. 58 is sponsored by Roemer Machine & Welding, Sears Seating, Eriksen Chevrolet-Buick and P&L Transportation.

Points chase: Entering the race, Justin Kay of Wheatland, Iowa, had 190 points to lead Andy Eckrich (181), Tyler Bruening (170) and Joel Callahan (168).

Car count: 24

Heat race winners: Ray Guss Jr., Brian Harris, Terry Neal

Next series race: June 3, Hamilton County Speedway (Webster City, IA) $3,000