We don't know who came first, but on the same day that Full Tilt seeks to break the world record for most players in a single tournament, PokerStars will also be competing.
Stars claimed the record to begin with, at 35,000 players on Dec. 28, 2008.
Both sites already have more than the record amount of players.
Tilt has capped theirs at 50,000 (currently at 41,884 at this posting). Their tourney is a $5 with a $500,000 guaranteed prize pool.