Khabib Nurmagomedov, the undefeated MMA champion

MMA world lightweight champion Khabib Nurmagomedov announced his shock retirement from the sport on Saturday after revealing he promised his mother his clash with Justin Gaethje would be his last fight.

The Russian, who won by a second-round technical knockout, was fighting for the first time since the death of his father Abdulmanap, who was also his coach, in July.

“I’m the UFC undisputed, undefeated champion with a 13-0 record (in UFC), and 29-0 in all of my pro MMA career,” he said after his win in Abu Dhabi.

“Today I want to say this is my last fight. No way am I coming here without my father.

“When UFC comes to me about Justin I spoke with my mother for three days. She didn’t want me to fight without father and I said this is my last fight – and I have given her my word.

“Thank you, coach, thank you, guys. Today is my last fight in the UFC.”

Abdulmanap Nurmagomedov, 57, passed away after COVID-19 related complications in the summer.