Key notes: JOn Lee pulled up lame in the first heat. ... Points leader and reigning tour champ Mason Zeigler, winner of the first two ULMS events, was a no-show. ... Drake Troutman entered in a John Johnson-owned car, racing as a teammate to Colton Flinner (Troutman is between his former Team 22 Inc. and a new Jerry Foster-backed team). ... Greg Oakes missed time trials. ... The Jay’s Automotive United Late Model Series kicks off a Fourth of July weekend quadrupleheader with Wednesday’s 40-lap, $6,000-to-win Liberty Classic at Michaels Mercer Raceway, which hosts its third race of the season. … It’s the first ULMS event in nearly two months and first series stop at Mercer since April 15, 2017 (won by Dave Hess Jr.). … Jon Lee grabbed a $3,000 unsanctioned victory there last March 29. … Gregg Satterlee has two Mercer specials dating back to July of 2010, worth more than $7,000. … Off-track entertainment includes a kids club from 5-8 p.m. featuring an obstacle course, basketball challenge and free popsicles; a fireworks show is also planned. … Modifieds and mini stocks are on the undercard. … Pits open at 4 p.m. and grandstands open at 5 with hot laps at 7. … Watch live on Dirt Rich TV.

Who to watch: Max Blair of Centerville, Pa., seeks his first Super Late Model special at Mercer.

Points chase: Before Mercer: 1. Mason Zeigler (500); 2. Jon Lee (480); 3. Greg Oakes (415); 4. Bryan Bernheisel (375); 5. Kevin Smith (330).

Expected entrants: Max Blair, Mike Marlar, Drake Troutman, Dave Hess Jr., Gregg Satterlee, Clay Harris, Trever Feathers, Bryan Bernheisel, Brock Pinkerous, Colton Flinner, Tyler Emory, Jared Miley, Jon Lee, Levi Yetter, Dylan Cecce, Mike Knight, Greg Oakes, Dan Angelicchio, Ken Schaffer, Dylan Lewis, Kevin Smith, Dave Stamm and more.

Current weather: Clear, 88°F

Car count: 29

Fast qualifier: Max Blair

Time: 15.702 seconds

Heat race winners: Mike Marlar, Drake Troutman

Next series race: July 3, The Dirt Track at Genesee (Batavia, NY) $3,000