Each week, we'll take a look at offensive players at each position who helped put their team in the best position to win. At numberFire, we dive beyond the box score and look at how each player's performance affected the outcome of the game.

To do this, we'll look at numberFire's signature metric, Net Expected Points (NEP), which quantifies the number of points a player adds to his team versus how he's expected to perform. When a player rushes for 5 yards on a 3rd-and-3 and keeps the drive -- and potential for scoring points -- alive, he'll add more to his team's expected point total than when a player rushes for 5 yards on a 3rd-and-9 and forces his team to punt. You can learn more about NEP in our glossary.

After an exciting week that featured some spectacular individual performances, who were Week 15's NEP Superstars?