by Shaun Brown

Reports are coming out of Bulgaria that Kubrat Pulev has suffered a chest injury ahead of his IBF/WBA/IBO heavyweight title challenge against Anthony Joshua,

The bout, which was due to take place on October 28, on Sky Box Office in the UK and Showtime in America, at the Principality Stadium in Cardiff could now be in jeopardy following a report on btv.bg

The report at btv.bg says that Pulev suffered a rupture of the thoracic muscle after undergoing an ultrasound in Berlin. According to the report the injury is one that takes a month to recover from.

Pulev's injury apparently happened 10 days ago but was kept under wraps, for obvious reasons, in the hope that the former European Heavyweight champion and one-time world title challenger would recover, or able to get through it.

Btv.bg say that a new date for Joshua's IBF mandatory will be "scheduled in November or December".

A reported 75,000 tickets have been sold for the fight which was set to feature Dillian Whyte vs Robert Heleinus for the WBC Silver Heavyweight title and Kal Yafai defending his WBA Super Flyweight title against Sho Ishida.

Joshua's promoter Eddie Hearn was unavailable when Boxing Scene tried to contact him.

Editor's Note: Multiple sources with knowledge of the details have confirmed Pulev's injury, and likely withdrawal, to BoxingScene.com.