Derrick Lewis scores vicious knockout, moons crowd at UFC St. Louis 

Derrick Lewis delivered a jaw-dropping knockout to cap off UFC St. Louis on Saturday and then seconds later he put on another show for the audience in attendance.

Following a back-and-forth start to his fight with Rodrigo Nascimento, Lewis unloaded a massive right hand that blasted the Brazilian in the third round and sent him down to the ground. Lewis continued unloading punches until the referee had no choice but to stop the fight...