Atlanta Hawks head coach Michael Budenholzer says he was NOT driving drunk when he was arrested for DUI last night ... and says he has some semi-convincing proof to back his claim.
Budenholzer was arrested in Atlanta around 10:30 PM Wednesday night ... after a Georgia State Trooper noticed the NBA coach's car had a broken taillight.
During the stop, cops say they noticed a strong odor of alcohol on Budenholzer's breath -- and asked him to submit to various field sobriety tests, including a breathalyzer.
According to the incident report, obtained by TMZ, MB agreed to everything BUT the breathalyzer ... and then proceeded to perform poorly during the other field sobriety tests.
During the arrest, Budenholzer reportedly admitted to having consumed 1 glass of wine earlier in the evening. He was arrested and hauled to a nearby jail.
Budenholzer was eventually released from custody around 3:45 AM this morning (5 HOURS after the initial arrest) ... and his lawyer says the coach went directly to a local hospital where a blood test revealed his B.A.C. was less than .01.
Budenholzer has since pled not guilty to DUI -- and released a statement saying, "I apologize to the fans and to the Hawks organization for any negative attention this incident has brought upon my family and the organization while the legal process evolves and I contest these misdemeanor charges."