The University of Northern Ohio All-Star Circuit of Champions Series returns for its second visit to central Pennsylvania this weekend, with stops at Williams Grove and Lincoln Speedways, Friday and Saturday, respectively.

Tonight at Williams Grove, the ASCoC will look to try to defeat the central Pennsylvania stars, known as the Pennsylvania Posse, a feat the touring group has not been able to accomplish at the Mechanicsburg oval since its first visit in 1970.

Racing at the famed half-mile has been ultra-competitive; there has not been a repeat winner in the 410 sprint cars weekly action. Donnie Kreitz was victorious in the April visit by the ASCoC. The 358 sprint cars are also on the card tonight at the Grove.

The travelers head to Lincoln Speedway Saturday night to battle the local stars, and are again joined on the schedule by the 358 sprint cars.

Racing is a very exciting form of entertainment, although, sadly, we are sometimes reminded of the reality of just how dangerous the sport can be. Although the safety side of the sport has continued to improve, injuries and death still rear their ugly heads.

Wednesday night, 37-year-old Jason Leffler succumbed to injuries he sustained in a 410 sprint car accident at New Jersey's Bridgeport Speedway. The Long Beach, Calif., native had a successful racing career, accumulating four National USAC titles (3 Midget and 1 Silver Crown Series); won in nearly every type of race car he drove and was inducted into the National Midget Hall of Fame in 2003

Leffler competed in all three levels of NASCAR; the Trucks, Busch/Nationwide and Cup Series, and competed in his last Cup race just last week at Pocono. He was one of the few drivers who drove in the Indianapolis 500 (2000) and also NASCAR's Brickyard 400 (2001, '03-'05 and '08).

He leaves behind a five- year-old son, Charles Dean Leffler. Godspeed Jason.

Two area tracks will hold memorial races this weekend to honor fallen drivers. Big Diamond Speedway presents the Andy Fayash Jr. Sportsman Memorial and Selinsgrove Speedway hosts the 10th annual Joe Whitcomb Memorial. Fayash succumbed to injuries while working on his race car at home earlier this year. Whitcomb was fatally injured in a sprint car wreck at Selinsgrove, June 21, 2003.

Action at Big Diamond tonight includes the 358 modifieds and roadrunners joining the Fayash Sportsman Memorial. Saturday, the late models, pro stocks and roadrunners join the 358 sprints on the racing card at Selinsgrove.

Racing action starts at 7:30 Saturday night at Selinsgrove.

NOTES: Williams Grove presents its weekly Saturday Night Series tomorrow with the winged super sportsman, limited late models and street stocks. ... Port Royal hosts $10 Fan Appreciation Night Saturday with the 410 sprint cars, late models and 305 sprints. ... Grandview Speedway features the URC Sprint Car Series Saturday night along with the 358 modifieds and vintage race cars. ... The NHRA Mello Yello Drag Racing Series returns to action this weekend in Tennessee. The tour visits Bristol Dragway for the 13th annual Ford Thunder Valley Nationals. Heading into this weekend's event, Shawn Langdon (Top Fuel), Matt Hagan (Funny Car) and Mike Edwards (Pro Stock) lead their respective class point standings. ESPN2 will provide 2½ hours of qualifying action Saturday night at 7 and early eliminations action on Sunday at 1 p.m. and final eliminations action at 11 p.m. Tony Schumacher (T/F), Ron Capps (F/C) and Edwards (P/S) are the 2012 event winners.