I've tuned in every night (I do regardless) and he is the GOAT already. He has a better average Coryat (basically just money value ignoring Final Jeopardy and Daily Doubles only counting for the clue dollar value) than Ken Jennings.
With last night's win his average winnings passed $77,000. That's notable because it was the 1-day record before his run. His average game is now above that.