Holly is a southpaw who is used to fighting orthodox fighters, she seems to be dependent on her lead left hand and that southpaw angle where you have the foot on the outside and then pivot out to the right which is a good weapon to have when you're fighting orthodox fighters but can easily be neutralized when fighting another southpaw. When you're fighting someone with the same stance as you are (orthodox vs orthodox, southpaw vs southpaw) the jab becomes much more important, that's why so many boxing coaches obsess about it. It's pretty much a necessary punch unless you have some flashy style like Roy Jones Jr., among other things because it helps you find range which is what Holm was unable to do during the entire fight. Holly was unable to get the jab going and didn't feint the jab properly (her feints are horrible) in fact she didn't even try, she was trying to land some of the most telegraphed lead left hands I ever saw which was embarrassing to watch. She got countered by Valentina's right hand all the time. She's a really one dimensional boxer with exactly one good punch. I love Holly for what she did to Ronda but people who claimed that she has "P4P" best technical boxing in MMA always seemed ridiculous to me. A 155 lbs male fighter with Holly's technique gets jabbed to death by Nate Diaz in a pure boxing match.