With the 2012 postseason underway, Alex Remington takes a look at the statistics that might make a difference in each of the four first-round series. Next up is the NLCS , which begins Sunday night at AT&T Park and features a matchup of the NL West champion San Francisco Giants and NL wild card champion St. Louis Cardinals . -4 The Giants' run differential against the Reds in their five-game NLDS victory. The Reds had a .716 team OPS and the Giants had just a .606 OPS, and the Reds had a 3.13 team ERA while the Giants had a 4.11 team ERA. The Reds did everything better than the Giants except win.