MANCHESTER, England (Reuters) - Japan produced the first upset of the Olympic Games when they beat potential gold medalists Spain 1-0 at Hampden Park, Glasgow on the opening day of the men's soccer competition on Thursday. Spain, bidding to add the Olympic title to their world and European crowns, finished with 10 men after midfielder Inigo Martinez was sent off just before halftime having found no answer to Yuki Otsu's 34th minute goal. In the other early matches Morocco and Honduras drew 2-2 at Hampden, while Mexico and South Korea drew 0-0 at St James' Park. ... More...