Uzbekistan's Sher Mamazulumov stuns Ruslan Kostin of Russia in Moscow

Uzbekistan’s MMA fighter Sher Mamazulumov stunned his Russian rival at the Absolute Championship Berkut KB-15 for the memory of Yuriy Stupenkov in Moscow.

Mamazulumov knocked out Ruslan Kostin of Russia in the first round of the fight at the Dinamo Sports Arena.