https://www.sbnation.com/nba/2019/11...in-nba-history
"Dallas is No. 1 in offensive efficiency by a mile right now, scoring 117.4 points per 100 possessions via NBA.com. That’s nearly four points better than the second best offense (the Wizards!) and nearly six points better than Houston’s No. 3 offense. Last year’s Warriors set the record for offensive efficiency with 115 points per 100 possessions. Yes, that means Doncic’s Mavs are currently the best offense in NBA history, or at least since 1973 when Basketball-Reference started tracking. (The Basketball-Reference numbers differ slightly from NBA.com but still have the Mavs as the best ever.)"