Deontay Wilder, in the build-up to his fight with Zhilei Zhang, hinted at retirement if he lost.

Wilder not only lost he was also stopped by Zhang in Round 5 of their main event fight atop the '5 vs 5' card. His defeat marked a clean sweep for Queensberry Promotions over Matchroom Boxing, raising massive questions about Wilder's future.

Wilder (43-4-1, 42 KOs) appeared greatly distressed by the concussive blow delivered by the 41-year-old Zhang (27-2-1, 22 KOs) in that fifth round. It would be the last punch of the fight.

"This fight I am holding as my last stand, my last chance, and that’s what I am taking it accordingly as," Wilder said earlier in the week at the press conference.

"I am a warrior. I got a warrior mentality, I got a warrior heart, and I will die for what I believe in.

"I am looking forward to proving I still got what it takes.”

Despite just beating the count - at nine - his unsteady legs and foggy eyes prompted referee Kieran McCann to stop the fight at 1:51. Wilder objected to the stoppage. Bottom line is this: The 38-year-old has now lost four of his last five fights, three of which were knockout losses.