Four new contenders burst into Gladiator Arena as the race towards the semi-finals heats up. On the women’s side, 20-year-old college student Annie Castellano from Stoneham, Massachusetts takes on 52-year-old investment team manager Yoko Ohigashi from Brea, California. For the men, dolphin trainer Alejandro Soto from El, Cajon, California battles camp media director Tim Oliphant from Branson, Missouri. “American Gladiators” is hosted by Hulk Hogan ("Hogan Knows Best") and Laila Ali ("Dancing with the Stars”).