3) Jose Iglesias
For all the OMG discussion this postseason with the Mets and their run, it was the author of the song that proved to define the mental grit and toughness with this team. In Game 1 of the Wild Card Series, down by a run with two out in the 5th inning, he beat out a ground ball to first base by hustling to the bag and diving head first to be ruled safe, thanks to Milwaukee's Joel Payamps inability to cover first base.
That hustle turned a 4-3 deficit into a 4-4 tie, and instead of stranding two base runners, the Mets added four more two out runs to take an 8-4 lead, which turned out to be the final score of that game.
Also, not surprisingly, his defense has been stellar as well, as he has played 61.2 innings on the field, has helped turn big double plays, and filled in nicely at third base when Carlos Mendoza substituted Mark Vientos out of the game for defense (Luisangel Acuña came in to replace the moved Iglesias each time at second base).