::::That's not really how baseball works. Championships are all that matter. Having the best record in the league means nothing if you don't win the World Series. Head to head stats aren't really useful in this case, because the rivalry is not about statistics. It's about wins. But, yes, between 1920 and 2003, the Yankees beat Boston head-to-head 57% of the time. Which puts Boston a bit below the Detroit Tigers... not stellar. Over that many games (about 1500), most teams range around 50%. Much higher than that, over that long of a time period, translates to fairly consistent domination.