Derrick Lewis unleashes scary ground attack to finish Damian Grabowksi

Derrick Lewis may not be a top five heavyweight just yet, but he could be the scariest fighter in the division, especially if he's unleashing his special brand of ground and pound on the mat.

Lewis took on UFC newcomer and highly touted prospect Damian Grabowski on Saturday night, but it didn't take him long to remind the rookie what it's like to jump into the deep end of the heavyweight division.

Almost as soon as the fight started, Grabowski attempted to get Lewis to the ground where he could play his submission skills.

Unfortunately for him, Lewis shrugged off the takedown, tossed Grabowski to the mat and then proceeded to launch punches at his head that looked as if they could have easily driven through flesh, the mat and eventually the concrete on the floor.

Lewis redefines power shots with the kind of force he puts behind his punches and even with Grabowski blocking a few of them with his arms, the sheer impact still rattled the newcomer's head and left him dazed and confused on the ground.

Lewis uncorked one final massive punch that rocketed towards Grabowski's head as he turtled up and just tried to avoid taking anymore damage. The referee swooped in for the stoppage to prevent Lewis from doing any further damage.

"I wanted to take his head off the first five seconds," Lewis said after the win.

While the fight lasted longer than five seconds, Lewis certainly got the job done while giving Grabowski a rather rude welcome to the Octagon. Lewis moves to 5-2 overall in the Octagon with all five of his wins coming by way of knockout or TKO.