At the World Series of Poker (WSOP), Kassela has won three bracelets, cashed 26 times, and made ten final tables.[5]
The first time Kassella made a final table was at the 2005 World Series of Poker in the $2,500 Pot Limit Hold'em event which was won by Johnny Chan, finishing fourth and earning $68,425. At the 2010 WSOP, Kassela won the $10,000 Seven Card Stud Hi-Low Split-8 or Better Championship, with its $447,446 first prize, and also the first place prize of $214,085 in the $2,500 Razz event.[5] Additionally in 2010, Kassela finished in third place in the $25,000 No-Limit Hold 'Em Six-Handed event for $556,053 and also cashed in the 2010 WSOP Main Event finishing 674th place, earning him $21,327 after his K♦K♣ failed to hold up to his opponents' A♠Q♣.[6]
As of 2017, his total live tournament winnings exceed $3,025,000.[4]