All Poirer had to do was walk him down and time the left hand over the top of a jab and he probably takes Koch out.
Instead he clinches with him and gets his back taken.....
Yeah it didn't make any sense but he is a sloppy/immature fighter.
Poirer has a lot of holes but they are fixable problems for a 24 year old. He will keep losing a lot of fights to guys at the top who are really crafty on the mat like KZ/Hioki or just technically sound standing like Aldo or Frankie until he fixes them. Koch on the other hand has terrible reflexes which will only get worse with time. He should not have been getting hit by that straight left as often as he did.