One of Leitao 's best students , MMA legend Marco Ruas , was one of the fi rst fi ghters in MMA to incorporate Muay Thai .
One of Leitao 's best students , MMA legend Marco Ruas , striking with his grappling expertise .
One of Leitao 's best students , MMA legend Marco Ruas , was one of the fi rst fi ghters in MMA to incorporate Muay Thai and striking with his grappling expertise .