UFC lightweight Arman Tsarukyan might want to have a word with whoever is in charge of keeping the cage door closed during training sessions at his gym. On Tuesday, Tsarukyan posted a video showing him hitting pads with one of his coaches and a spinning back kick ended in disaster after the unnamed coach went flying backwards through an open door before crashing on the ground. View this post on Instagram A post shared by Arman Tsarukyan (@arm_011) Tsarukyan reacted appropriately throwing his hands into the air and running out to check to see if his coach was OK.