Park Pictures

Subway took the celebrity endorsement premise to the next level by featuring four of the biggest sports stars—Tom Brady, Stephen Curry, Megan Rapinoe and Serena Williams—in its “Eat Fresh Refresh” campaign. Ads featuring the athletes plus voiceover work from Charles Barkley debuted in July. Later in the year, Brady appeared in a follow-up campaign promoting a new ultra low-carb bread served at Subway that even the bread-shy athlete can eat. Check out the full list at Adage.com