MOISES FUEENTES was taken to the hospital after being knocked out by David Cuellar, Cancun.
WBC boss Mauricio Sulaiman confirmed that the 36-year old has been admitted to hospital.
Fuentes was caught by a left hook, and hit the canvas
Jake Donovan, Boxing Scene's reporter, reports that Fuentes will be undergoing emergency surgery on Sunday at 7 a.m. local time.
Cuellar (19 years old) was completely in control of the bout, landing a plush lefthook that sent Fuentes to the canvas.
Fuentes was found motionless in the ring, and the referee immediately sought medical attention.
The veteran was taken to a local hospital on a stretcher.
Sulaiman asked the boxing world to pray for Fuentes speedy recovery.
On Twitter, he said: "Moises Fuentes was admitted to the hospital following the dramatic knockout.
"The boxing community comes together in prayer for his recovery."
Fuentes' most recent loss is his third early KO in the spin.
The Mexican fighter has now lost five of six fights at the back end his career.
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