chess or poker

[Leptyne]

IMHO the differing games require different skill sets. It is not unheard of, but certainly rare, for players at the top levels to be able to master both skill sets. Like sports, there are athletes coming out of high school or college that can turn pro at more than one sport, and of course there are players that have played two sports at the same time (baseball and football). Chess and poker not only require different skill sets but appeal to different personalities. It will be rare to find anyone interested in being a Grandmaster of both.