Marchese, one of the most respected online pros in the world, came in to the final table third in chips but dominated much of the action to enter heads-up play with a slight lead.
He needed some help to seal the deal, however.
After a back-and-forth match that stayed pretty even until Robl edged out to a 2-1 chip advantage, Marchese found himself all-in with 7♦ 4♦ against Robl's T♣ T♠.
The board came A♠ Q♣ 6♠ 3♠ to the turn, leaving Marchese just three non-spade fives to save him.
The 5♦ miraculously dropped on the river and Marchese was back in the game. Thirty hands later, he was the champ.
On the final hand, Robl min-raised to 500k with A♦ 4♣, Marchese reraised to 1.2 million with 8♥ 8♠ and Robl shoved.
Marchese snap-called and improved to a set on the flop to take the title down.
Having originally busted in the tournament and opting to re-buy, Marchese ended up making it worth his while and takes home $1.1 million in profit.
Robl earned $822,375 for his runner-up finish.
Bonomo Bubble Boy
John Juanda in third ($526,320), Daniel Perper in fourth ($394,740) and Bill Klein in fifth ($263,160) were the other players to cash from an elite field of 32 that started the event.
Justin Bonomo was the unfortunate first to bust at the final table and miss the money.
Official final-table results and payouts below:
1st: Tom Marchese - $1,308,405
2nd: Andrew Robl - $822,375
3rd: John Juanda - $526,320
4th: Daniel Perper - $394,740
5th: Bill Klein - $263,160
6th: Justin Bonomo - $0
Streaming coverage of the $25k final table is set to begin with hole cards and commentary from Tony Dunst and Dan O’Brien at 4:30 pm.
Follow along with both the live stream and the live updates here.