Lewis Hamilton wins the floodlit Singapore Grand Prix from pole position on Sunday to extend his championship lead over Sebastian Vettel to a commanding 40 points.

Roger Penske stood atop the timing stand at Sonoma Raceway, transfixed by the overtime laps of NASCAR's playoff opening race at Las Vegas. He had three drivers in contention for a critical victory, and when Brad Keselowski crossed the finish line for Team Penske's 500th organizational win, the Captain pumped his fist in the air.

Scott Dixon used a steady Sunday drive to win his fifth IndyCar championship with ease. Dixon needed an uneventful finale at Sonoma Raceway to lock up the title and got it on the opening lap of the race.

Canadian driver Robert Wickens posted an update to Twitter Sunday night as he continues to recover from a horrific crash at Pocono Raceway on Aug. 20. Here is what he had to say.

Lewis Hamilton cruised to victory at the Singapore GP for his 69th career first-place finish, extending his championship points lead. Hamilton discusses the challenge Max Verstappen gave him in the race and how he was able to top the podium on a circuit typically dominated by Red Bull and Ferrari.

A disappointed Sebastian Vettel says he and his car weren't fast enough, and that his aggressive strategy early didn't pay off.

Max Verstappen says he is happy finishing second place, and comments on the decision not to take the chance on passing Lewis Hamilton.

Ross Chastain held off Justin Allgaier for his first NASCAR Xfinity Series victory Saturday, pulling away on the final restart.