Joey Logano won Sunday's STP 300 Nationwide Series race after he passed his Penske Racing teammate, Sam Hornish Jr., on a restart with 15 laps to go at Chicagoland Speedway.
Logano, who was the only Sprint Cup Series regular competing in this 300-mile event, held off Hornish at the finish by just 0.3 seconds for his second win of the season and the 20th of his Nationwide career. He also won at Chicagoland in 2009.
Sprint Cup took its final off weekend before racing resumes in one week at Indianapolis.
"I don't know if we had the car to beat, but we kept working on the car," said Logano, who led five times for a total of 35 laps in the No. 22 Penske Racing Ford. "At the beginning of the race, it was kind of a third or fourth-place car. (Crew chief) Jeremy (Bullins) made great changes throughout the race to make it better."
Logano is sharing driving duties with Brad Keselowski, A.J. Allmendinger and Ryan Blaney in the No. 22 car in Nationwide this year. Keselowski has won two races and Allmendinger one during the season.
Hornish started on the pole and led the first 48 laps before he was penalized for speeding on pit road. He spent most of the race battling his way back to the front. Hornish regained the lead just before a caution on lap 178 but lost it to Logano eight circuits later.
"It was tough there, because we had a really good race car," Hornish said. "There was too much communication and nobody could talk when the pits were opening. By the time I realized the pits were opened and I was coming, it was pretty late. It's on me that I was speeding. But we could have done a little bit better there."
With his second-place run, Hornish claimed the lead in the Nationwide point standings. He holds a seven-point advantage over Regan Smith, who finished 13th following his spin on the frontstretch late in the event. Smith entered this race with a five-point lead.
Austin Dillon finished third and claimed the $100,000 "Dash 4 Cash" bonus from series-title sponsor Nationwide Insurance for the second race in a row. He collected the cash award last weekend at New Hampshire.
"We had a good car but just needed a little bit more at the end," Dillon said.
Elliott Sadler, who won at Chicagoland one year ago, finished fourth after leading the most laps with 81. Brian Vickers took the fifth spot one week following his Sprint Cup victory at New Hampshire.
Hornish, Dillon, Sadler and Vickers will be eligible for the $100,000 bonus next weekend at Indianapolis -- the final event in the Dash 4 Cash this season.
Parker Kligerman finished sixth, while Trevor Bayne placed seventh. Justin Allgaier, Brad Sweet and Matt Crafton completed the top-10.