Nurmagomedov is the reigning lightweight UFC champion with an impressive 28-0 record
Jones, the current light heavyweight champion, has lost just one match from 27 UFC bouts
McGregor has held the UFC featherweight and lightweight championships since he made his debut in 2013
Defending heavyweight champion Miocic has tasted defeat just thrice in his career spanning over a decade
Usman is the reigning welterweight UFC champion. He has lost just once in his career so far
Volka, the defending featherweight champion, has won 18 fights in a row and lost just one out of 22
Silva defended the middleweight title 10 times before losing to Chris Weidman in 2013
Dominick Cruz dominated the bantamweight division. He won 22 bouts out of 25
Hughes is considered one the UFC greats. He won 46 bouts and lost just nine times during his career
Barnett held an impressive record and beat Hall of Famer Randy Couture to win the heavyweight title