Son Tae-jin (red) competes against Mark Lopez (blue). (Photo credit: Vladimir Rys/Bongarts/Getty Images)

Son Tae-jin of the Republic of Korea beat Mark Lopez of the United States to win the Olympic Taekwondo Men's 68kg division gold medal here on Thursday.

Mark Lopez (blue) of the United States reacts after losing the fight. (Photo credit: Vladimir Rys/Bongarts/Getty Images)

Son Tae-jin (red) competes against Mark Lopez (blue). (Photo credit: Vladimir Rys/Bongarts/Getty Images)

Son Tae-jin hugs his coach after his win. (Photo credit: Vladimir Rys/Bongarts/Getty Images)