Call him Mini-sota Fats. An upstate New York two-year-old is being dubbed a billiards prodigy by dazzling crowds across the country with his pool playing prowess. Keith O’Dell Jr. of Johnstown was invited to perform at the American Pool Association’s championship competition in Las Vegas last month, and he’s booked to show his skills on the Rachael Ray show in July. The wiz kid learned the game on a child size table, but recently switched to regulation size. He reaches the balls by standing …