#2. Muhammad Mokaev - UFC flyweight contender

Muhammad Mokaev is unique to this list as he is yet to make his UFC debut. However, he is one of the most highly-rated prospects in some time having never lost in over 20 fights as an amateur. The rising star also holds a 5-0 record with one no contest at just 21 years of age.
'The Punisher' is incredibly young to be achieving what he has and he's almost picked up wins in multiple weight classes. Of his six professional fights, Mokaev has fought at 135 lbs three times, at 130 lbs twice and at 125 lbs just once, although it is at this weight he will be making his debut for the American promotion.
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Mokaev is being touted as an all-time prospect and is certainly one to watch. He will be making his octagon debut against Cody Durden at the planned London event on March 19.
#1. Khamzat Chimaev - UFC welterweight contender

Khamzat Chimaev has looked flawless thus far in his MMA career. His record stands at a perfect 10-0, he's finished every opponent and only three of his opponents have made it out of the first round. On top of that, his wins have been spread fairly evenly between the welterweight and middleweight divisions.
Chimaev is ranked No.11 in the welterweight division, although half of his UFC fights have been contested at middleweight. For the moment, he appears to be focused on 170 lbs with many speculating he is just one win away from earning a shot at the champion Kamaru Usman.
Chimaev has proved he is capable of competing at an elite level at both 170 and 185 lbs. At just 27 years old, he has plenty of time to earn championship success and just maybe do so in two weight divisions.