I'm locking into the Thunder at this number figuring superstar Luka Doncic is going to play. But Doncic isn't a given to play in this matchup. He's been bothered by lower back tightness. This is Dallas' final game before All-Star break so the Mavericks could choose to hold him to give him extra rest figuring they can still win this matchup without him. 
Obviously it would be a monster bonus if Doncic is held out. But, again, I'm not counting on that. Instead I'm relying on the Thunder's spunk, the situation and the Mavericks' poor track record in spots like this.
Oklahoma City has covered 67 percent of its last 52 road contests. The Thunder are 3-2 in their last five games, but coming off an embarrassing, 126-99, home loss to the Nuggets. That game was played Saturday. So Oklahoma City has had three full days to prepare for this matchup. 
Dallas, on the other hand, is in action for the third time in five days. The Mavericks have failed to cover nine of the last 11 times they've been a home favorite.