For the third time over the last couple of years, Khabib Nurmagomedov has been forced onto the sidelines with yet another injury.

According to MMAFighting.com's Ariel Helwani, Khabib sustained the rib injury while participating in the portion of his training camp done in Russia. Soon afterwards, Khabib's father, Abdulmanap, took to Facebook to elaborate on the injury.

"This injury is a very unpleasant situation," said the renowned Dagestani coach. "We tried to figure out how to train and avoid injuries, not to disappoint our fans. But we failed. Khabib stopped a takedown while working in sparring when he got injured. We couldn't force everything."

Abdulmanap, who trains the likes of Islam Makhachev and Abubakar Nurmagomedov as well, also revealed that Khabib's training conditions this time around were far from ideal.

"Too much effort was spent on flights here and there, meeting youth, and we also always had many guests at home. This isn't a proper regime for training."

To add to Khabib's terrible luck, the injury was sustained one day prior to his flight to San Jose, California to continue training at the American Kickboxing Academy.

"We got the injury one day before flight to USA and 42 days before the fight. We planned to do 2 training camps - 21 days each. Khabib's weight was 85kg what I think was good regarding the time he had before the fight. One relief for us - is that wasn't his old injury, not his knee. A broken rib is a very common injury for wrestlers."

No timetable has been set for Khabib's return. Edson Barboza is scheduled to replace the inured Dagestani against Tony Ferguson in December.

Translation via Artem Safarov