Athletics world watching as 'Grand Slam Track' prepares for launch

Four-time Olympic gold medallist Johnson believes the four-event circuit represents a landmark moment for track and field, a bold new attempt to reinvigorate interest in the sport after years of decline. Johnson, 57, says the format of his new circuit –- which promises to create more head-to-head races between the world's best track athletes -- represents a winning formula that will bring eyeballs back to athletics outside the pinnacle of Olympic competition. "People love racing. People want to see the best of the best.