NEWTON, Iowa (AP) It took rookie William Byron just a week to get over one of the most brutal losses of his young career.

The 19-year-old Byron grabbed the lead with just over 20 laps left and won the NASCAR Xfinity race at Iowa Speedway on Saturday night for his first series victory. Read More...

SONOMA, Calif. (AP) Seven-time championship-winning crew chief Chad Knaus was oddly calm Friday even though his race notes for star driver Jimmie Johnson this weekend had been stolen from his rental car in San Francisco.

Knaus and his wife arrived in California on Wednesday night and headed to Fisherman's Wharf for dinner. Knaus told The Associated Press they parked at a meter in a bustling area and were gone approximately 90 minutes. Read More...

NEWTON, Iowa (AP) John Hunter Nemechek raced to his second straight NASCAR Camping World Truck victory, taking the lead with his six laps left Friday night at Iowa Speedway.

Nemechek took four new tires during the final caution. The gamble paid off, as he passed leader Johnny Sauter soon after a restart. Read More...

SONOMA, Calif. (AP) Lightning McQueen went to NASCAR's victory lane last week when Kyle Larson drove the "Cars 3" vehicle to a win.

The McQueen paint scheme has shifted to Clint Bowyer's car this week, and he's looking to keep the winning streak going. Read More...

SONOMA, Calif. (AP) Alon Day will become the first driver from Israel to compete in NASCAR's top Cup series this weekend at Sonoma Raceway.

Day will drive for BK Racing in No. 23 Toyota. The 25-year-old from Tel Aviv as named Israel's 2016 "Athlete of the Year." EarthWater Limited will sponsor Day's car at Sonoma. Read More...

SONOMA, Calif. (AP) NASCAR is back at Sonoma Raceway and the defending race winner won't be part of the field on Sunday.

Tony Stewart, who scored the last of his 49 career victories here, is retired now and watches the Cup races as a team owner. He still plans to race this weekend. Read More...