Key notes: The MARS Championship Series wraps up its 2023 season with a weekend doubleheader at Tri-City Speedway, starting with Friday’s $5,000-to-win opener. … It’s the 15th-ever series stop at the Granite City, Ill., oval. … Series points leader Jason Feger of Bloomington, Ill., leads all drivers with eight victories this season as he looks to secure his first career MARS Series championship. … Tony Jackson Jr. of Lebanon, Mo., won August’s $5,000 tour stop there. … Mike Harrison of Highland, Ill., topped July’s $5,000 DIRTcar Summer Nationals race at Tri-City. … Daryn Klein of Fairview Heights, Ill., won 2019’s $3,000 MARS series visit there. … Modifieds and B-Mods are on the undercard each night. … Pits open at 2 p.m. and grandstands open at 5:30, with hot laps at 6:30 nightly. … Watch both nights live on FloRacing. … Thursday’s open practice session was rained out.

Who to watch: MARS points leader Jason Feger of Bloomington, Ill., eyes his series-leading ninth victory of the season as he looks to wrap up his first career tour championship.

Points chase: Before Tri-City: 1. Jason Feger (1,081); 2. Ryan Unzicker (983); 3. Mike Harrison (817); 4. Bob Gardner (781); 5. Blaze Burwell (725).

Expected entrants: Jason Feger, Tony Jackson Jr., Gordy Gundaker, Ryan Unzicker, Mike Harrison, Trevor Gundaker, Bob Gardner, Cody Laney, Kye Blight, Tyler Stevens, Blaze Burwell, Daryn Klein, Kyle Hammer, Rich Bell, Mark Voigt, Justin White, Billy Laycock, Jake Little, Rich Dawson, Doug Tye and others.

Current weather: Scattered Clouds, 84°F

Next series race: September 23, Tri-City Speedway (Granite City, IL) $5,000