Winning a World Series of Poker title is one thing, but defending it, that's where it's at. Doyle Brunson, Stu Ungar, and Johnny Chan famously did it in the WSOP Main Event long ago, while the most recent to do it was Thang Luu, who won the $1,500 Omaha Hi-Low Split-8 or Better in 2008/09. Now all of those players, along with a few others, have company as Tuan Le just added his name to the prestigious list of back-to-back champions.