Khabib Nurmagomedov rushed into the octagon to help his second cousin, Shamil Zavurov, after he was brutally knocked out.
The UFC fighter watched the 34-year-old Russian fighter compete against Mansour Barnaoui at Road FC 52 on Saturday, which is part of the MMA organisation's 32-man tournament.
During the finals of the tournament, Barnaoui delivered a devastating knee strike on Zavurov that knocked him clean out.
Check it out below.
Ouch, right? That's going to leave a mark in the morning.
"Sensational KO," one Twitter user wrote.
A second tweeted: "Fair play to him for not dropping down and following up with an unnecessary ground shot. Barnaoui knew Zavurov was done for."
A third said: "Nice dab at the end."
To add insult to injury, Zavurov missed out on the chance to fight for $1m in his next match after his defeat to Barnaoui.
Last month, the Nevada State Athletic Commission slapped Khabib with a nine-month suspension and a $500,000 (£380,950) fine after it delivered its verdict on the aftermath of UFC 229.
While he might be ruled out from competing inside the octagon (for now at least), the 30-year-old Russian fighter expressed his desire to fight Georges St-Pierre.
However, Khabib's dream match with the UFC legend won't take place after the 37-year-old Canadian announced his retirement last week.
"There's no tears, I'm very happy to do it. It takes a lot of discipline though to retire on top," GSP said.
"It was a long process in my mind, but it's time to do it. Only a few people have done it and I always said I wanted to retire on my own and not be told to retire."
Who should Khabib fight on his return to the octagon?
Let us know in the comments.
Featured Image Credit: Caposa