Down John Wall, Christian Wood, Eric Gordon, Danuel House and P.J. Tucker, the Rockets could have the worst offense in the NBA. Houston's offense should pick up as early as Tuesday when Wall and Wood could return. But right now it's terrible. The Rockets are averaging 99.8 points in their last eight games. 
Boston's defense has been disappointing this season. The Celtics, though, have played average-to-well above average offenses during each of their past dozen games. They also have back defensive whiz Marcus Smart. Now the Celtics finally are drawing an offensively-challenged opponent. 
Houston Coach Stephen Silas has emphasized defense since becoming the Rockets coach. Houston is on a 15-game losing streak, but the short-handed Rockets showed plenty of moxie in their last game on the road against the powerful Jazz rallying from 26 points down to cut Utah's lead to four points in the fourth quarterback before losing. 
The Celtics are a below average scoring team when on the road. Boston is averaging only 103.7 points in its past seven away games.