Turns out, the UCLA vs. USC game isn't the biggest thing going on in Jim Mora's life this week -- he just officially filed for divorce from his wife of 24 years ... TMZ Sports has learned.
Jim and Shannon Mora announced they had separated back in June -- but now, Jim has filed documents to end the marriage once and for all.
In court docs obtained by TMZ Sports, Mora cites irreconcilable differences.
The couple has 4 kids together -- including 2 minor children. He's asking for joint custody.