Yes, a win tonight would confirm his position as the GOAT to many if not most tennis fans. There are reasons to continue forward. First, Novak doesn't seem motivated by money but for the records and the challenge to be the best. Walking away now would always leave him and the rest of us wondering what could have been
Second, to achieve this Grand Slam would give him more power within tennis to help shape the direction of the ATP and other aspects of player representation. He cares about this based on his past efforts for player representation.
Third, you don't get this far without having a drive within you to keep pushing forward. It's not like Sampras where he seemed finished and then came back to prove himself, and then retired when he did. Novak is still at the very top and hasn't been displaced. I suspect he'll wait for that time.
Finally, I don't think he'll retire post win, nor do I think he should. Always finish the job. One slam past Fed and Rafa isn't absolute. Rafa is like a movie character that always comes back to life. Don't turn your back on him when he's on the ground face down. It means nothing.
