Steve Sarkisian: The Picture of Sobriety ... Talkin' SC In Bev Hills

Ex-USC football coach Steve Sarkisian has finally surfaced -- and he looks like the picture of sobriety ... just 2 months after hitting rock bottom.

Sark was leaving NikeTown in Bev Hills, looking lucid, healthy and upbeat ... drastically different from the guy who drank himself out of a job earlier this year.

Check out the clip ... Sarkisian says he'll still be rooting hard for his Trojans when they take on Stanford in the PAC 12 championship Saturday ... but wouldn't give a prediction as to who will win.