By Mark Lamport-Stokes DUBLIN, Ohio, Oct 1 (Reuters) - Nick Price was reluctant to describe this week's Presidents Cup as a 'must-win' for his International team but he knows how important it is for United States dominance to be broken in the biennial competition. The Internationals have beaten the U.S. only once in nine editions of the Ryder Cup-style event, losing all four of the most recent encounters, and need to make this week "very competitive," according to Price. ... More...