VORP measures value over replacement player, adjusted for positional scarcity, demand, and your league settings. Keeper Score combines VORP with draft capital savings to tell you how much edge you gain (or lose) keeping a player vs. drafting them at market.

Score is 0 at ADP, positive when kept at a bargain, negative when overpaying. Round Savings shows rounds of pick equity gained vs. ADP.

PPG Added and Wins Added answer a different question: not "is this a good price," but "how many real points and wins does keeping them get you." The baseline isn't a blank roster spot — it's whoever you'd actually draft at that position in that round, since a round-3 QB and a round-3 RB come off completely different point curves. RB/WR/TE (and QB too, in superflex) are pooled together for this since any of them can fill your FLEX slot — a real alternative to a kept RB isn't just another RB. Wins Added estimates the season-long win swing from that points edge using a normal win-probability model.