SPARTA, Ky. - The top spot in the final NASCAR Nationwide Series practice Friday at Kentucky Speedway went to a Richard Childress Racing driver, but probably not the one you would expect.

Cale Conley turned 53 laps in the hour-long practice and his best (175.404 mph) was 0.029 of a second faster than Trevor Bayne's in the No. 6 Roush Fenway Racing Ford.

The 300 will be Conley's ninth start this season in the No. 33 Chevrolet and first at Kentucky Speedway. He is running a partial Nationwide schedule and has made a handful of starts in the K&N Pro Series East this season.

Qualifying for the 300 is scheduled at 4:05 p.m. Saturday with the race set for 7:30 p.m.

Led by Conley, RCR saw all four of its entries post top-10 speeds in the final practice; Brian Scott was third in the No. 2 Chevrolet; Ty Dillon was sixth in the No. 3 Chevrolet and Brendan Gaughan was ninth in the No. 62 Chevrolet.

Conley's best finish in eight starts this season was 11th at Bristol in his Nationwide debut.

Dillon enters the weekend ranked third in the series points standings, 50 points behind leader Chase Elliott. He finished seventh here in June but won a Camping World Truck Series race on the 1.5-mile track last year.

"I wish we were closer," Dillon said. "We had an issue at Mid-Ohio that cost us a lot of points. We're still in striking distance, and we still have the opportunity to win this (championship). We've just got to win some races."

Elliott drives the No. 9 JR Motorsports Chevrolet and wound up eighth in the final practice. His teammate, and closest pursuer in the standings, Regan Smith, was 16th in the No. 7 Chevrolet.

Sam Hornish Jr., a two-time winner in the IndyCar Series at Kentucky Speedway, was fourth in the final practice followed by Chris Buescher.