TMZ Sports has obtained the mug shot for ex-boxing champ Victor Ortiz -- taken right after he was arrested for DUI on Saturday.
We broke the story ... the 29-year-old former "Dancing With the Stars" contestant was pulled over in California for expired tags on his BMW -- and during the stop, cops suspected he was drunk.
Ortiz -- who is on probation stemming from a 2015 battery conviction -- was arrested and taken to a nearby station where he was booked for driving under the influence.
He has since been released. So far, no comment from his camp.
Waiting for your permission to load the comments.