On the poker front, O'Kearney won the 2008 European Deepstack Poker Championship, defeating a high quality field that included Joe Beevers, Julian Thew, Tony Baitson, Arnaud Mattern, John Falconer, Dave Colclough, Conor Tate, Owen Mullen, Mickey Wernick, Barny Boatman and Christy Smith.
Dave Brubeck | Dave Stewart | Dave Grusin | Dave Matthews | Dave Liebman | Dave Weckl | Dave Grohl | Dave Van Ronk | Dave Ramsey | Dave Chappelle | The Dave Ramsey Show | Dave Eggers | Sam & Dave | Dave Mirra | Dave McKean | Dave Graney | Dave Coulier | Dave Koz | Dave Cousins | Dave Barry | Dave Lombardo | Dave Lister | Dave Alvin | The Dave Ramsey Show (radio program) | Dave Navarro | Dave Meltzer | Dave Hill | Dave Dobbyn | Dave Brock | Dave Lawson |
He won a second bracelet in the $2,000 Omaha 8 or Better event in 1998, and a third bracelet in the $2,000 Pot Limit Omaha event in 2004, finishing ahead of Robert Williamson III, Dave Colclough and Chris Ferguson.