With the Red Sox and Cardinals meeting each other for the fourth time in World Series history, a list of the matchups that have occurred most frequently might be appropriate. Here is a list of all the combinations that have occurred more than twice:
11 World Series meetings: Yankees/Dodgers
7 World Series meetings: Yankees/Giants
5 World Series meetings: Yankees/Cardinals
4 World Series meetings: Yankees/Braves, Athletics/Giants, Tigers/Cubs, Red Sox/Cardinals (including 2013)
3 World Series meetings: Yankees/Reds, Tigers/Cardinals
I count a total of ten matchups that have occurred exactly twice: the Yankees with the Cubs, Phils and Pirates; the A’s with the Cubs, Reds, Dodgers and Cards; the Indians with the Braves (Native American nickname vs. Native American nickname); the Senators (now known as the Twins) with the Giants; and the Orioles with the Pirates.