Key notes: The DIRTcar Summer Nationals concludes its first week of competition during its 40th anniversary with Sunday’s 30-lap, $5,000-to-win stop at Sycamore Speedway. … It’s the fourth of 33 races scheduled over 34 days. … A $150,000 points fund will be paid out weekly with $10,000 to each week’s champion. … Shannon Babb of Moweaqua, Ill., has won two of the first three Summer Nationals events, adding to his lead on the tour’s all-time win list. Babb topped 2018’s Hell Tour stop at Sycamore, worth $10,000. … Two-time and reigning series champ Jason Feger of Bloomington, Ill., won June 12’s second round at Coles County Speedway in Mattoon, Ill., and enters with six career Sycamore specials, including the last two Summer Nationals visits. … Ryan Unzicker of El Paso, Ill., earned a $5,000 MARS Late Model Series victory there in the fall of 2024. … Brian Shirley of Chatham, Ill., is a three-time Summer Nationals winner there (2021-’23), earning more than $20,000. … Mike Spatola of Manhattan, Ill., has two major wins there, including a Dirt Kings Tour victory in 2024. … Street stocks ($1,000-to-win) and pure stocks are on the undercard. … Pits open at 1 p.m. and grandstands open at 4:30 with hot laps at 6:30. … Watch live on DIRTVision.

Who to watch: Shannon Babb of Moweaqua, Ill., seeks his third Summer Nationals victory in the first four events.

Points chase: Before Sycamore: 1. Tanner English (216); 2. Jason Feger (191); 3. Shannon Babb (190); 4. Bob Gardner (158); 5. Daniel Adam (153).

Expected entrants: Shannon Babb, Jason Feger, Brian Shirley, Ryan Unzicker, Tanner English, Chris Simpson, Bob Gardner, Frank Heckenast Jr., Clay Stuckey, Chad Finley, Tyler Millwood, Jake Little, Daniel Adam, Michael Leach, Mitch McGrath, Jordan Bauer, Daryn Klein, Rich Bell, Jackson Hise, Brody Smith, Tyler Leach, Mark Voigt, Jake Rainey, Billy Knippenberg, Doug Tye and more.

Next series race: June 15, Wilmot Raceway (Wilmot, WI) $5,000