Sushil Kumar is making a last-ditch effort to win a gold medal at the Olympics. The only Indian wrestler to have won two individual wrestling medals -- a bronze at Beijing 2008 and London 2012 -- at the quadrennial Games, Sushil Kumar is "preparing hard" to qualify for the 2020 Summer Games in Tokyo between July 24 to August 9. And, Sushil is looking not beyond boxing queen Mary Kom for motivation.