Mark Cuban -- DONALD TRUMP IS A LIAR ... I Never Golf, Not Once [Update]

9:55 AM PT -- Trump has responded to Cuban on Twitter ... saying, "Saw @mcuban try to hit a ball in Lake Tahoe while I played in tournament- he’s got no talent or strength!!!!"Mark Cuban says Donald Trump is a liar -- claiming there's NO…

Lori Heuring Lorri Bagley Lucy Liu Luján Fernández