M-1 Challenge 66 takes place on May 27 in Orenburg and will be headlined by the Viktor Nemkov vs Rashid Yusupov M-1 Light heavyweight Title fight. M-1 Challenge 66 card: (93 kg) Viktor Nemkov (23-5) vs Rashid Yusupov (7-0) (93 kg) Stephan Puetz (13-2) will face Andrey Seledtsov (5-1) (70,3 kg) Raul Tutarauli (6-2) vs Damir Ismagulov (5-2) (63,5 kg) Josh Rettinghouse (12-4) vs Vadim Zhlobich (4-2) (65,8 kg) Mikhail Korobkov (9-0-1) vs Timur Nagibin (7-1) (61,3) Alexander Krupenkin (2-2) vs Movsar Evloev (4-
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