He firstly knocked out Green Spangler before beating Li Shuai via decision in his second fight .
On 21 April 2012 , Marcus defeated two opponents back to back without rest at the Qianjiang World Muay Thai King Challenge in Beijing , China .
Marcus firstly knocked out Green Spangler before beating Li Shuai via decision in Marcus ' second fight .
On 21 April 2012 , Marcus defeated two opponents back to back without rest at the Qianjiang World Muay Thai King Challenge in Beijing , China .