The guilty plea took place in November and the league had his suspension begin on Saturday night. The official incident report lists driving while impaired and a lane usage violation against the Rockets' guard after leaving a party in Denver, Colorado in January.
Lawson will miss Monday's game against the Charlotte Hornets after sitting out of Saturday's win over the Los Angeles Clippers.
He has a sentence hearing on January 14th where he could face up to 180 days in jail. The former Denver Nugget could appeal the suspension, but really wants to play on Christmas Day against the San Antonio Spurs.
Lawson was just acquired in the off-season as the Rockets traded four players to Denver in the deal. He started the first 11 games of the season, but a lack of chemistry between him and the team led to Patrick Beverly taking his spot.
Lawson is averaging 5.9 points and 4.2 assists, well below his career numbers, and with the Rockets struggling out of the gate, could be the target of other teams in a possible trade. He may also be looking for a fresh start elsewhere after a bumpy ride thus far in Houston.
The 28-year-old could face another suspension from the league for a separate DUI arrest in July. Lawson was ordered to spend 30 days in an alcohol rehab facility, so it seems as if he has other issues to take care of before focusing on basketball.