The Yanks have to hold it to three here. Hypothetically, if they do, here's the situation the Yankees would be faced with in the 9th.
Down three runs, with Posada, Matsui, and Jeter coming up. The question would become, can they get A-Rod up. Three of the five guys would need to reach. All five are good hitters, so it's not entirely unrealistic. I don't like their chances, but we'll see.