Alexey Vasilyevich Papin (; born 6 October 1987) is a Russian boxer and former kickboxer who has held the IBF International title in 2018 and 2019. As of September 2021, he is ranked as the sixth best cruiserweight in the world by Transnational Boxing Rankings Board, and seventh by The Ring and BoxRec. Kickboxing career He challenged Nenad Pagonis for W.A.K.O. Pro Low-Kick Rules Cruiser Heavyweight World Championship on 9 March 2013 in Monte Carlo, Monaco, losing the fight by split decision. Revenge happened on 29 June 2013 in Moscow, Russia. This time Papin won the fight after second round by retirement, with Pagonis injuring his elbow. Papin added W.A.K.O. Pro Low-Kick Rules Cruiser Heavyweight World Championship in his treasury alongside ISKA Low-Kick Rules Super-cruiserweight World Championship and W5 Low-Kick Rules Championship. Boxing career Papin made his professional boxing debut against Sergey Beloshapkin on November 21, 2015. He won the fight by a fourth-round knockout. He amassed a 9-0 record during the next two years, stopping all but one of his opponents. Papin was scheduled to face Willbeforce Shihepo for the vacant IBF International Cruiserweight title on June 23, 2018, at the Floyd Mayweather Boxing Academy in Zhukovka, Russia. He won the fight by an eight-round technical knockout. Papin knocked down Shihepo in the first round, although the Namibian was able to recover from it. Papin continued to land damaging strikes to his opponent however, opening a cut on Shihepo in the fifth round, before he knocked him down once again in the eight round. Following the second knockdown, the referee decided to stop the fight. A year later, on June 16, 2019, Papin was scheduled to fight Alexandru Jur for the IBF International Cruiserweight title, which Papain had in the meantime vacated. Papin won the fight by a third-round knockout, stopping Jur at the 19 seconds into the round. It was revealed on July 12, 2019, that Papin would challenge the reigning WBC Silver Cruiserweight titleholder Ilunga Makabu. The fight was confirmed fort the undercard of the Sergey Kovalev versus Anthony Yarde light heavyweight clash, which was scheduled for August 24, 2019, at the Traktor Ice Arena in Chelyabinsk, Russia. Makabu won the fight by majority decision, with two judges awarding him a 115-113 scorecard, while the third judge scored it as a 113-113 draw. Papin was scheduled to face the fifth-ranked WBC cruiserweight contender Ruslan Fayfer in a