When he plays golf, Bryan Leskowitz does his best to remain calm. You might say he wears a poker face. Leskowitz, 42, of Leominster is a sales rep for Cobra Puma Golf, but he also knows a lot about poker. He played poker full-time for five years and still occasionally plays in professional tournaments. Last December, he won $32,000 in a World Poker Tour event in Las Vegas and in January he earned $148,180 by finishing third in the Borgata Winter Poker Open in Atlantic City.