Toyota drivers are still looking for their first NASCAR Sprint Cup Series win since last May, but they showed marked improvement Sunday from the season's first four races.
Denny Hamlin led 56 laps at Auto Club Speedway, and Matt Kenseth, his teammate at Joe Gibbs Racing, led 43 laps.
Neither finished well because of late problems. Hamlin was penalized when one of his tires rolled free during a pit stop, and he finished 28th.
"We had [a penalty] at the inopportune time," Hamlin said. "You just can't come back from that."
Kenseth was leading the race when his Toyota suffered a broken axle as he left pit lane,...