Tom Dwan has long been considered one of the most aggressive and fearless poker players in the world, and his mind-boggling swings are proof. The poker pro took to Twitter on Tuesday to say that he had just experienced his “biggest loss ever.”

That’s a scary thought.

Now, assuming that his comment referred to a poker session and not the death of a loved one, that means he had to drop an almost unfathomable sum. Dwan is a frequent competitor in high-stakes cash games in Macau. He also still plays the nosebleeds on Full Tilt pretty regularly.

In taiwan for the 1st time ever… Not leaving the airport tho. Maybe next trip. Had my biggest loss ever yesterday — Tom Dwan (@TomDwan) September 24, 2013

According to HighstakesDB, Dwan has won a tiny sum of around $70,000 over the past week online, so his “biggest loss ever” must be referring to the live games against wealthy Chinese businessmen in the former Portuguese Colony. He said Friday that he had just got back to Macau.

Dwan didn’t give any indication of a figure, but his loss would have had to been greater than $2 million for his statement to be true. In 2009, when Viktor “Isildur1” Blom was rising in the poker world, Dwan lost around $2 million in a single session to him. That’s just one example of a horrible day for Dwan, as it’s possible, perhaps even likely, that he has had much worse sessions before.

It’s also easy to imagine his “biggest loss ever” was much, much larger than $2 million because there have been reports of pots worth around $3.8 million unfolding in Macau.

Fans of Dwan shouldn’t sweat. He always finds ways to stay in action at the highest stakes.