Favorite part was him getting boo'd. Video quality was crappy though. Hard to tell how hard that guy is hitting. From the video, almost looks like some of the punches were barely tapping him.

 

That's what it looked like on fight night, too.

There was one hard to see, partially extended jab that Kimbo walked into and it caught him on the button, but in most fights someone lands a much more serious blow than that, with no KO.

Seth's wild follow up assault was almost all near misses and grazing punches until the stoppage, so it seems the earlier jab was what caused the damage.