With 50 laps left in Sunday's STP 500, Clint Bowyer grabbed the lead, but a subsequent caution and a mistake on pit road proved his undoing.

After Carl Edwards spun on Lap 459 to bring out the 14th caution of the afternoon, Bowyer led the field to pit road. But a problem with the right rear tire led to a slow stop that mired the driver of the No. 15 Michael Waltrip Racing Toyota in 10th place for a restart on Lap 466.

"Disappointed," Bowyer summed up his feelings in a word. "We had the lead there at the end and had trouble in the pits and came out 10th. We just didn't have enough laps to make it up. "Just really disappointed. Felt we could have had the win there."

Last week at Auto Club Speedway in Fontana, Calif., Bowyer was running second when he blew a left-rear tire with less than three laps left in the Auto Club 400. Bowyer is 17th in the series standings, with just one top 10 in six starts