Key notes: The Lucas Oil Late Model Dirt Series concludes its doubleheader weekend with Saturday’s 50-lap, $25,000-to-win 40th annual Ralph Latham Memorial at Florence Speedway. … The event honors Latham, of Cincinnati, Ohio, a three-decade standout driver who amassed more than 200 victories and multiple track championships; Latham, by all accounts, was a great man, husband, father and racer who died in 1986. … Ricky Thornton Jr. led the final 10 laps in winning Friday’s $15,000 weekend opener at Circle City Raceway. Thornton won the last Latham Memorial on May 6, 2023, after the event rained out the past two years. Thornton also topped 2024’s Spring 50 at Florence, worth $10,000 in Northern Allstars action along with 2023’s FloRacing Series stop, worth $23,023. … Reigning Lucas Oil champ Devin Moran earned a $20,000 victory there last June 28 in Hunt the Front and Northern Allstars co-sanctioned competition. Moran also added a $6,000 North-South prelim victory there last fall. … Josh Rice is a two-time Latham Memorial winner (2021-’22) and enters with 13 Florence victories since 2021, worth more than $90,000 over that span. … Justin Rattliff of Campbelsville, Ky., won March 21’s NALMS-sanctioned Spring 50, worth $10,000. … 604 Crate Late Models ($1,500-to-win) and modifieds are on the undercard. … Pits open at 2 p.m. and grandstands open at 5 with hot laps at 6. … Watch live on FloRacing.

Who to watch: Ricky Thornton Jr. of Chandler, Ariz., chases his second consecutive Latham Memorial and second straight Lucas Oil victory.

Points chase: Before Florence: T1. Devin Moran (2,300); T1. Hudson O’Neal (2,300); 3. Brandon Overton (2,110); T4. Brandon Sheppard (2,100); T4. Ricky Thornton Jr. (2,100); 6. Max Blair (2,095); 7. Garrett Alberson (1,835); 8. Kyle Bronson (1,825); 9. Clay Harris (1,815); 10. Carson Ferguson (1,800).

Expected entrants: Among drivers expected to join the top 10 in series standings: Josh Rice, Mike Marlar, Brian Shirley, Jason Jameson, Dave Hess Jr., Justin Rattliff, Adam Stricker, Dan Ebert, Michael Chilton, Trevor Landrum, Cody Mahoney, Dillon McCowan, Daniel Hilsabeck, Steve Peeden, Brenden Smith, Freddie Carpenter, Dillard Hatchett, Kody Evans, Cory Lawler and others.

Next series race: May 8, Farmer City Raceway (Farmer City, IL) $25,000