photo: WSOP.com

That’s what we wanna know … after Saturday/Sunday’s marathon 9->2 session … how long do you think the heads-up battle between Darvin Moon and Joe Cada will go?

They’re currently in Level 39, with blinds at 500k/1000k + 150k.

Moon has almost the same number of chips he started with, 58,850,000, while Cada, who started with just 13,215,000, now has all the rest — 135,950,000.

What they’re fighting for, essentially: $3.36 million in cash, and then everything else that goes with being WSOP champ.

NOTE: In our previous unscientific poll, Moon got the second-most votes … Cada fourth-most.

The record for WSOP heads-up battles is 7 hours 10 minutes, set by Chip Reese vs. Andy Bloch in 2006. Before that it was 7 hours, in the 1983 main event … where after Doyle Brunson busted out in 3rd on a semi-bluff, an unknown from Michigan, Tom McEvoy, beat Rod Peate for $580,000:

BTW, for a fun historical perspective, watch the start of the television coverage of the 1983 final table here.