Win Probability Added (WPA) — which players actually make their team more likely to win? WPA tracks every try, error, line break and penalty and calculates the exact shift in win probability each event caused. A positive WPA/80 means the player consistently improved their team's chances. Unlike fantasy scores, WPA doesn't reward stats that don't move the needle on winning. Tip: set Min Minutes to 600+ to filter out interchange players with small samples.