Basketball legend Shaquille O’Neal was spotted on Saturday afternoon discussing hot dog eating strategy with Eater X at Serendipity 3 at Caesars Palace Las Vegas for the popular ABC TV show, "Shaq Vs." In the episode that was filmed Saturday, Shaq took on the world's number one eater, Joey Chestnut, in an intense hot dog eating competition near the iconic fountains at Caesars Palace . Eater X was his coach.