A highly contentious aftermath came as the result of the finish of the featured UFC 305 prelim, as Valter Walker pulled off a sudden first-round win over Junior Tafa.

After getting rocked by Tafa's striking early, Walker took the fight to the ground, where he secured solid control of the fight and did not let up.

Tafa protested, slapping Walker after the fight and exchanging barbs with him.

Though Tafa was unhappy and the UFC commentary team initially confused, the referee, under the Unified Rules of MMA, is allowed to call a verbal submission if a fighter cries out from pain.

Valter Walker Scores Verbal Submission Win Over Junior Tafa

Walker scores his first UFC win tonight, rebounding from dropping his UFC debut to Łukasz Brzeski in April.

Tafa is now just 1-3 in the UFC.