… have you never seen the Olympics ?
China and Japan both rank very high in gold medals, with South Korea close. And other diverse countries in Europe and America had Asian athletes win gold
I'm very confused by the OP's specific callout of fighting as well. 3 out of the 5 martial arts fighters I think of immediately are Asian; the other two being white and black respectively.
Asians are really good in the lighter weight classes of boxing and kickboxing. The top pound for pound boxer right now is asian (inoue) you also had Manny Pacquiao a few years ago.