The Bellator 138 main event between Kimbo Slice and Ken Shamrock delivered; there's no doubt about that. What, exactly, did it deliver? Well, that's up for debate.

Check out the full fight video highlights here, courtesy of ESPN.com:

Shamrock was aware that his best chance of defeating Slice was to exploit his lack of grappling experience, and he did his best to capitalize.

As soon as the bell rang, Shamrock shot for a double-leg takedown. While Slice would defend, Shamrock continued to apply pressure with his wrestling, eventually upending him with a strong single.

The World's Most Dangerous Man immediately took advantage, advancing position, taking Slice's back and sinking in a deep rear-naked choke. While a tap seemed imminent, Shamrock couldn't seal the deal and was forced to let go.

Slice muscled his way back to his feet, and he then landed a hard uppercut during the scramble. The punch staggered Shamrock, and Slice followed up with a hellacious series of right hands. A devastating straight landed hard to Shamrock's eye and dropped him into the corner of the cage. When Slice moved in for some ground-and-pound, referee John McCarthy waved the fight to a close.

It is a disappointing turn for fans of the MMA legend. Shamrock's rear-naked choke looked airtight to the point that it felt strange Slice was able to escape, and more than a few folks (some famous) on Twitter questioned the legitimacy of the fight:

Kimbo emphatic with his feelings on facing Petruzelli again - NO #Bellator138

— Combat Press (@CombatPress) June 20, 2015

Where Shamrock goes from here is tough to call and will likely hinge on Bellator 138's ratings and the availability of worthwhile opponents. Slice, however, said he is sticking around, telling Luke Thomas of MMAFighting.com, "I believe I'm here to stay. I'm still learning, back to training on Monday, and it's not going to stop here."

What say you, fans? Do you want to see either man return to the cage? Whom would you like to see them face?