Leigh Diffey

Leigh Diffey is an Australian-American auto racing and track and field commentator. He is best known for being the lead play-by-play announcer for much of NBC Sports' motorsports coverage, currently calling NASCAR Cup Series, IMSA sports car races for the network and AMA Supercross. Before this, he was the lead voice of NBC's Formula One and IndyCar Series coverage. Diffey has also worked play-by-play for NBC's coverage of the Summer and Winter Olympic Games, most notably becoming the network's lead track and field sportscaster prior to the 2020 Summer Olympics in Tokyo, Japan.