He crashed out disappointingly in his first match while Kumar went on to win silver in the 66 kg category .
Four years later at the London Olympics , Yadav had graduated to being a teammate , competing in the 74 - kg category .
Yadav crashed out disappointingly in Yadav 's first match while Kumar went on to win silver in the 66 kg category .
Four years later at the London Olympics , Yadav had graduated to being a teammate , competing in the 74 - kg category .