As long as there have been professional sports, there have been professional athletes, willing to accept money to wear certain brands, but the biggest endorsement deals were only made possible by a mid-20th century invention: the television. Fans realized they could tune in to see their favorite athletes almost any day of the week. Brands realized they just got hundreds of walking billboards showing the capabilities of their athletic gear in action… and it’s a race to see who can reach the world’s best athletes first.