669: Leigh Diffey is a Play-by-Play Announcer with NBC Sports who covers Formula One and IndyCar.

Leigh Diffey is a native of Brisbane, Australian who lives in the U.S. and is a Play-by-Play Announcer with NBC Sports. Leigh is the voice of Formula One television and IndyCar. He travels the world covering Formula One along with David Hobbs and Steve Matchett. He was SPEED’s announcer and host for the Grand-Am Rolex Sportscar Series, US rounds of the MotoGP, and he was a regular host on SPEED Center and The Speed Report. No doubt you've heard his voice on numerous other sports coverage shows around the world with his technical prowess including: the Olympics, World Cup Luge, NASCAR, golf, sailing, and rugby. Leigh has also worked for the BBC commentating the Superbike World Championship and World Rally racing.