They are probably capable of covering your whole face, he could use them in a clinch to smother you, make you miss breaths, in fact if I was reffin one of his fights i'd stipulate he wear a sweat band
seems like they were head to head and touching foreheads and Canelo leaned forward a little and push Jacobs head back slightly, and Jacobs saw that as an aggressive move on Canelo's part and he pushed his head forward hard enough and it caused the problem. All of you saw this I am sure. It makes me wonder how many more views the fight will get because of this altercation.