Houston quarterfinal Shelton Tirante set for drama

Ben Shelton meets Thiago Agustin Tirante Friday in the Houston quarterfinal at the U.S. Men's Clay Court Championships. Shelton is the favorite, but Tirante has been ruthless on clay, dropping just five games in two matches. Big serve, big rallies, big pressure. I told you this would get spicy. Shelton in three, maybe with a tiebreak circus.