I have not researched these games as I've been busy the last few days but here are the consensus plays for all the Christmas NBA games. The cappers are on the Celtics, Bucks, and Rockets (+1 and moneyline) with the highest difference between side plays and they like the over in both the OKC/Houston game as well as the Utah/Portland game.

For informational purposes these picks are via the picksandparlays.net website consensus picks from their numerous professional handicappers. It doesn't tell you who is on which side but it tells you how many cappers are on each side. Hopefully this information is helpful in your handicapping endeavors. Good luck!