There are always arguments over who is the best at a certain position, but not many are as controversial as second base.
First, I would like to say that I am sorry to players like Ian Kinsler, Chase Utley, Brandon Phillips, Ben Zobrist, Howie Kendrick, Rickie Weeks and Dan Uggla, but by far the best second basemen in the majors are Dustin Pedroia and Robinson Cano.
Now that we have narrowed it down to two players, which is better? The only way to do that is to compare them head-to-head. To do that, we need criteria and those criteria are simple: batting average, plate discipline, extra base hits, power, speed, defense, arm and playoff performance.