Paul Pierce sued over alleged poker debt from Larry Brown Sports, with Steve DelVecchio and from YardBarke.com/www.yardbarker.com Paul Pierce is facing a lawsuit from a man who claims the former NBA star owes him a hefty sum of money. According to documents that were obtained by TMZ, a man named Stephen Carmona claims he loaned Pierce $150,000 and the Hall of Famer never paid him back. Carmona says Pierce asked for the money when he showed up to Carmona’s house on Jan. 27 and wanted to take part in a poker game Carmona was hosting. The lawsuit states that Pierce…