LeBron James set to face Celtics' Big 3 in second round (AP)

It's LeBron vs. the Leprechaun. For the first time in his pro career, LeBron James will go one on one in the postseason with basketball's most storied franchise -- the Boston Celtics -- who haven't won an NBA title since 1986, when he was a 2-year-old toddler dribbling only his food. But Cleveland's 23-year-old megastar is well aware of the Celtics' championship cache and Boston's Big Three of Kevin...