Rory McIlroy needs to win the Masters Tournament to become the sixth man in history to complete the career grand slam in golf.
He's in the best position through 36 holes since 2016, when he was in solo second, one shot behind Jordan Spieth.
But McIlroy has had chances to win the Masters before, and he's always been turned away, either by a player catching fire to pass or stay ahead of him, or by self-destructing.
Which will it be? Even he's not sure.