Key notes: I-94 EMR Speedway hosts the 39th annual Speedway Motors WISSOTA 100, a $10,000-to-win special for WISSOTA Late Models. … Wednesday's prelim had a lengthy delay after a track official died when he was struck by a racecar during the night's opening heat race action. ... Josh Zimpel of Braham, Minn., led all 40 laps of Wednesday's WISSOTA Challenge Series season finale, clinching his spot in Saturday’s 50-lap main event, along with the rest of the top-eight finishers occupying the inside starting row. … Two-time WISSOTA 100 winner Chad Becker of Aberdeen, S.D., led all 20 laps of Thursday's prelim, securing a spot in Saturday's main event. ... Johnny Broking of Grand Rapids, Minn., fired off from the outside front row and earned a flag-to-flag victory in Friday's qualifier. … The four-day event concludes Saturday with consolations preceding the 50-lap, $10,000-to-win finale. … Kevin Eder of Cameron, Wis., won Tuesday's $3,000 Challenge Series opener which served as a warmup for the week's racing action at I-94. ... Shane Sabraski of Rice, Minn., won last year’s $10,000 WISSOTA 100 and last year’s $2,600 WCS season finale. … Tyler Peterson of Hickson, N.D., topped 2023’s WISSOTA 100, worth $10,000. … Cole Schill of Hawley, Minn., is fresh off his biggest career victory last Saturday at River Cities Speedway in Grand Forks, N.D., winning the 19th annual John Seitz Memorial, worth $9,200. … Modifieds, super stocks, midwest mods and street stocks are on the undercard. … Pits open at noon and grandstands open at 2 p.m. with opening ceremonies at 5 … Watch live on Dirt Race Central TV.

Who to watch: Shane Sabraski of Rice, Minn., eyes his first career Challenge Series title and second straight WISSOTA 100 victory at I-94.

Points chase: WISSOTA National through August: 1. Tyler Peterson (1,635); 2. Chad Becker (1,580); 3. Dave Mass (1,553); 4. Shane Sabraski (1,552); 5. Kevin Burdick (1,538).

Expected entrants: Shane Sabraski, Kevin Burdick, Dave Mass, Tyler Peterson, Dan Ebert, Cole Searing, Chad Becker, Cole Schill, Jeff Prozinzino, Kevin Eder, Josh Zimpel, Mike Stearns, Trevor Anderson, Zach Johnson, Johnny Broking, Joel Bennett, Chase Gelling, Cory Crapser, Amelia Eisenschenk, Lee Grosz, Gunner Frank, Devin Fouquette, Laela Eisenschenk, Jayson Good, Jordan Tollakson and more.

Current weather: Clear, 72°F

Car count: 48

Fast qualifier: Shane Sabraski

Time: 16.195 seconds