Rank the players you are deciding between, see each one's floor and ceiling for the week, and set the lineup that gives you the best odds to win your matchup. Compare two players head to head on the compare page, or find a replacement on the waiver wire.
Add the players you are choosing between and Frank, FanRanked's projection model, ranks them for the spot with each one's chance of outscoring the rest. Sync your league and it sets your whole lineup with your league's own scoring.
It depends on your matchup. If you are projected to win, start the steadier player; if you are the underdog, start the one with the bigger ceiling. A synced league shows your odds to win the week with each player in each seat.
Every week Frank's pre-kickoff board is frozen and graded once the games are final, so the page shows how often its calls were right, split by how confident each call was.