Eric Molina, a former heavyweight champion, was involved in an incident that occurred after his fight with Alejandro de la Torre.
39-year-old American veteran has been involved in numerous fights against Deontay Wilder and Anthony Joshua during his long career.
However, in 35 fights 27-7 Molina lost to Brit Fabio in Gibraltar earlier in the year. This was his first career in Mexico.
The US ace was facing 2-11 journeyman De la Torre, when suddenly the ring collapsed as they rounded the corner.
As the fighters crashed to earth, fans scattered.
The fight went on without incident.
Molina won via second round KO. He shared the clip of the horrifying moment that the ring collapsed on Instagram.
Molina also wrote "About last night" alongside the video. It was a wild night in Mexico that I will never forget.
BETTING SPECIAL - GET PS50 IN FREE BETS WITH WILLIAM HILL"I have heard of boards breaking and ropes breaking but this is the first time I've seen it.
"Fortunately, nobody was hurt from the landing.
"After the ring was reassembled, the fight continued and ended soon after.
"Go fight in Mexico. They said it would be fun. Second rd. KO."
Mauricio Sulaiman, president of WBC, later said: "Anything could happen in the ring.
"Fortunately, there weren't any injuries."
Molina lost to Joshua, a British star, in the 2016 IBF heavyweight title fight.
Molina was defeated by Wilder in the ninth round of KO a year prior to winning the WBC title.
Eric Molina was defeated by Anthony Joshua in the 2016 IBF heavyweight title challenge.
