MEXICO CITY (AP) — As World Cup fever sweeps Mexico City, one of the tournament’s biggest fan favorites isn’t a player, coach or official mascot. Joining Merlin the duck in the pantheon of heart-stealers is Osito, an 8-year-old rescue poodle mix who’s become an unlikely sensation after arriving at Mexico’s opening match perched on the back of a cargo bicycle, dressed in a Mexico jersey, sunglasses and a cap.