1 Errol Spence

The unbeaten 25-year-old is a 2012 Olympian and has stopped 14 of his 17 victims.

2 Felix Verdejo

The 22-year-old Puerto Rican lightweight made his HBO debut earlier this month, extending his record to 18 fights unbeaten. He turned professional with Top Rank in 2012 after competing in the Olympics.

3 Artur Beterbiev

After a standout amateur career, the light-heavyweight has blitzed through his first nine opponents as a professional, including Tavoris Cloud and Gabriel Campillo.

4 Anthony Joshua

The London 2012 super-heavyweight gold medallist is yet to be taken past three rounds in 13 fights, recently stopping Kevin Johnson.

5 Jessie Magdaleno

The Las Vegas native has made serious waves in the featherweight division. The hugely popular 23-year-old spent time as a super-bantam but
returned to 126lbs in May.

6 Callum Smith

The Liverpool super-middleweight is unbeaten in 16 fights and has eight first-round stoppages to his name. Ranked third in the world by the WBC.

7 Gilberto Ramirez

The 24-year-old Mexican has racked up 31 straight wins, 24 early, and faces Derek Edwards for the WBO International super-middleweight title on Friday.

8 Oscar Valdez

Having represented Mexico at London 2012, the 24-year-old super-featherweight has made a seamless transition into the paid ranks.

9 Luke Campbell

Britain’s most decorated amateur boxer, the 2012 Olympic gold medallist fights in a world lightweight title eliminator later this year.

10 Egidijus Kavaliauskas

The two-time Olympian had over 400 fights as an amateur and his trainer, Robert Garcia, believes he is one of the hardest punchers in the sport. He halted the man who would win Olympic silver, Fred Evans, in the 2011 World championships.