Leben by KO.
Hall is by far the most overrated fighter to come out TUF. He needs to hit & run in this fight, if he trades with Leben he'll get fucked up. Hall just doesn't have the mental ability to be a top fighter, he's the kind of guy who could beat Leben, but that's his level, he'll never surpass that. That's his grade, he's a mental midget & his ability for all the hype is nothing special. At his peak, he's mid tier UFC level at best.