The NBA takes center stage on Christmas Day with a monster, star-studded slate. James Harden and Russell Westbrook square off in Houston, MVP candidate Joel Embiid takes his surging 76ers into Boston, and LeBron James and the Lakers visit Stephen Curry, Kevin Durant and defending champion Golden State as 9-point underdogs. It's the first time LeBron has faced the Warriors since they eliminated him in last season's NBA Finals, when he was with the Cavaliers.

Fans across the nation will be placing wagers on all these showdowns, but if you're feeling truly bold on Christmas Day, former Vegas bookmaker Micah Roberts is going huge, putting together a four-team parlay of best bets that could return a massive 10-to-1 payout. If you bet $100, it would return $1,000. If you go big, it could be a life-changing holiday.

Roberts, who enters Christmas Day on a sizzling 11-4 run on NBA picks against the spread, is the insider who ran Station Casinos' sportsbooks for 13 years. Now on the other side of the counter, Roberts keeps handing out winners to his followers. 

We'll give one key part of the parlay away: Roberts is backing the Celtics (-3.5) to win big over visiting Philly just like they did in the season opener, a 105-87 victory at TD Garden. "Current form shows the Celtics ending a three-game slide (0-3 ATS) then winning 119-103 at home Sunday against the Hornets," Roberts told SportsLine. "Prior to the slide, the Celtics had won and covered eight straight, most of which were blowouts. ... I'm on Boston to do its thing at home and win large." 

Confidently lock in the Celtics, who have covered four straight home games vs. Philly, into your parlay and you could be well on your way to a colossal payoff.

Roberts also is fading a surging team the public can't get enough of. Find out which team it is, and everything else you need to know to complete your parlay selections, over at SportsLine. 

So which Christmas Day NBA picks should you back for a huge 10-to-1 payout? And which team is a must-fade? Visit SportsLine now to get the best bet for every Christmas Day NBA game, all from the red-hot Vegas legend who's nailed 11 of his last 15 NBA picks.