If the Cardinals win the World Series, Adam Wainwright will likely get a lot of the credit. Same for the Red Sox and David Ortiz.
But below are six postseason stats put up by six Red Sox and Cardinals players besides the biggest superstars. These are the brilliant acquisitions and smart signings who helped turn their already-star-laden teams from good to great, like Cardinals closer Trevor Rosenthal and Sox veteran Shane Victorino. Some of these players are performing well so far in October, and some aren't. And in a week-plus, savvy fans are likely going to be saying that one of them was a surprise key to a World Series championship, whether it's because they kept up a hot playoff streak or because they broke out of a slump when it counted most.
Of course, since we don't actually know who's going to win, we're hedging our bets and picking three players from each team. Somewhere in this list lies a number that, in retrospect, will explain everything.