Key notes: The Structural Buildings WISSOTA Challenge Series rolls into Gondik Law Speedway for the 10th annual Great Lakes Border Battle concluding with Saturday’s 40-lap, $3,000-to-win finale. … It was originally scheduled as a twin-feature weekend before Friday’s opener rained out. … Shane Sabraski of Rice, Minn., grabbed a $2,500 Twin Ports Twin 25 win there in July of 2024. … Reigning series champ Dave Mass of East Bethel, Minn., won last fall’s Twin Ports Twin 25 feature, worth $2,611. … Darrell Nelson of Hermantown, Minn., is a two-time WISSOTA Challenge Series winner there since July of 2015, earning more than $4,000. … Pat Doar of New Richmond, Wis., has four Gondik Law specials to his credit dating back 14 years, including three on the Challenge Series, collecting more than $13,000 over that span. … James Giossi of Hudson, Wis., topped a $2,020 WISSOTA special there in July of 2020. … Modifieds, super stocks, midwest mods and pure stocks on the undercard. … Pits open at 4 p.m. and grandstands open at 5 with racing at 7. … Watch live on Dirt Race Central.

Who to watch: Shane Sabraski of Rice, Minn., seeks his first Challenge Series victory of the season and his second at Gondik Law.

Points chase: Before Gondik Law: 1. Tyler Peterson (216); 2. Shane Sabraski (202); 3. Kevin Eder (191); 4. Kevin Burdick (190); 5. Ryan Mikkelson (189).

Expected entrants: Shane Sabraski, Darrell Nelson, Tyler Peterson, Pat Doar, James Giossi, Dave Mass, Kevin Burdick, John Kaanta, Jeff Massingill, Ryan Mikkelson, Jeff Provinzino, Kevin Eder, Skeeter Estey, Cory Crapser, Cade Nelson, Mike Prochnow, Travis Budisalovich, Johnny Broking, Steve Laursen, Jayme Lautigar, Adam Ayotte, Dave Flynn, Dexton Koch, Taylor Madrinich and others.

Next series race: July 16, ABC Raceway (Ashland, WI) $4,444