The last time we saw world No. 1 Jason Day he was walking to his car after withdrawing from the final round of the BMW Championship because of an injured back.
There are plenty of scenarios and stats to digest before play begins Thursday at the Tour Championship.
The path to the FedEx Cup title – and the $10 million bonus – is pretty simple for the top-5 players in the points standing. Win and they take home the FedEx Cup. For others, it's not that simple.