What won the race: Pat Doar led all 40 laps Saturday at Rice Lake Speedway for a $2,000 victory and his tour-leading 35th career Structural Buildings WISSOTA Challenge Series triumph. Doar outran fellow front-row starter Jimmy Mars amid single-file racing conditions in the second race of the tour's three-race holiday weekend.

Key notes: Doar's previous series victory came Sept. 1, 2019, in the season finale in Hibbing, Minn. ... Nineteen drivers were running at the finish. ... Aaron Wilson slowed for a lap-23 caution. ... Dave Mass lost a right-rear wheel for a lap-nine caution, scrambling a few other competitors with the wheel bouncing off John Kaanta's rear spoiler. ... The series returns to Rice Lake on July 31.

On the move: Jeffrey Massingill of Keewatin, Miss., started 18th and finished 12th.

Winner's sponsors: Doar’s Rocket Chassis is powered by a Vic Hill engine and carries sponsorship from Kivi Brothers Trucking, Polar Industries and Speedwerx Performance Exhaust.

Points chase: A.J. Diemel of Elk Mound, Wis., was the 2019 champion.

Current weather: Overcast, 54°F

Car count: 26

Polesitter: Pat Doar

Heat race winners: Steve Laursen, Chad Mahder, Pat Doar,  ,  ,  ,  ,  

Next series race: May 31, Granite City Motor Park (Sauk Rapids, MN) $2,000