Key notes: The Valvoline Iron-Man South Series heads to Tazewell Speedway for the third and final time this season as the high-banked bullring hosts the 14th annual Buddy Rogers Memorial. … Chris Madden of Gray Court, S.C., and Ricky Weiss of Headingly, Manitoba, grabbed series wins at The Taz’ earlier this season. … Last year’s race was rained out. … Donald McIntosh of Dawsonville, Ga., won the 2020 Rogers Memorial. … While Tennesseans won the first seven Buddy Rogers Memorials, home state drivers have been shut out of victory lane in the last five events. … With two wins each, David Payne of Murphy, N.C., and Billy Ogle Jr. of Knoxville, Tenn., are the event’s only repeat winners. … Sportsman, classics, street stocks and four-cylinders are on the undercard. … Pit gates open at 4 p.m. Grandstands open at 5 p.m.

Who to watch: Series leader Michael Chilton of Salvisa, Ky., chases his first Buddy Rogers Memorial victory.

Points chase: Before Tazewell: 1. Michael Chilton (996); 2. Eli Beets (800); 3. Stacy Boles (535); 4. Ricky Weiss (490); 5. Christian Hanger (437).

Next series race: September 14, Volunteer Speedway (Bulls Gap, TN) $12,000