What won the race: Fourth-starting Jake Redetzke of Eau Claire, Wis., outran polesitter Chad Becker of Aberdeen, S.D., at Casino Speedway's rain-hampered Marilyn Olson Memorial on Sunday to become the third winningest driver on the OneMain WISSOTA Challenge Series. Redetzke earned $2,071 for his first series victory since last August.

Key notes: Redetzke has 12 career series victories, trailing only Pat Doar (29) and John Kaanta (24); he entered the race tied with A.J. Diemel with 11 victories. ... Hometown driver Scott Ward, who won Friday and Saturday's WCS events, was 15th. ... Repeated rain delays threatened the night's action. ... The event capped a three-race, season-opening weekend at South Dakota ovals for WISSOTA's Late Model tour. ... Highway 20 Service, B&G Industries, Good's Lawn Service and Around the House Repair sponsor the night's racing.

On the move: Matt Gilbertson of Watson, Minn., started 17th and finished sixth.

Winner's sponsors: Redetzke's No. 27 is sponsored by Champ Pans, J&D Manufacturing and Alter Metal Recycling.

Points chase: Scott Ward entered the race as the early points leader.

Car count: 31

Polesitter: Chad Becker

Heat race winners: Jake Redetzke, Dave Smith, Kent Arment

Consolation race winners: Chad Williamson

Provisional starters: Ricky Weiss, Mike Jager, Nate Beyenhof

Next series race: June 17, Fairmont Raceway (Fairmont, MN) $2,000