The technique is the technique; get it perfect, so that you couldn't miss it if you tried, and then take that technique into the fight.
If you throw a left hook perfect on the mitts, and then **** it up in sparring because you're working with a different style or **** sparring partner, that work won't help you in the fight.
That's why you drill with actually good/active mittwork. Get the technique perfect, and then program in all of the proper responses into muscle memory.
You're throwing a right hand, hook, right hand, and you drill all of the ways you could get to that shot; catch on the glove before, catch on the shoulder before, slip the jab before, cut the jab with your own before, etc.
Some sparring could help confirm that the programming is done properly, but you might not need 100s of rounds of sparring.
That's the chance Tunde Ajayi, Anthony Yarde, and his camp have taken, and it was almost good enough to have Yarde knock out Sergey Kovalev in the 8th round to win a world title.
Yarde was missing a touch of experience at the top level, but he wasn't really missing anything that he could've picked up getting his brains beat in during heavy sparring in his pro career.
Look I'll be real. No professional boxing guy will give you a perfect hook in a fight lol. No matter how graceful your technique is, driven from the ankle to capture the perfect space moment of kinetic energy. His drill system failed him in the fight quite glaringly. Because its based on an optimal world(lala land)... that that's just where it ended. Yarde won 1 round maybe at the beginning and was out of range absorbing jabs while trying to counter with a left hook. 6 rounds of that! By the 7th he finally took a different approach to slip to the inside giving Kovalev some uncertainty with the newly added slot. And then Kovalev stopped throwing his jab, took body shots and then got to be "almost knocked out". Swimming in Olympics: the difference in determining winning from losing on average is 3 strokes... water boils at 212 degrees F not 211. An almost knock out, while suffering a jab knock out and doing so by thoroughly being out boxed isn't a close fight. There wasn't even a knock down, so almost for me is a stretch. By round 9 Kovalev had adapted by putting together right hooks to his body and face every time Yarde came to the inside. After that the fight was over. Couldn't beat Kovalev on inside or outside range in any trade.This was because his coach's system only works in a perfect world. Kovalev isn't perfect, in fact his responses aren't always optimal. But he's a better professional all around. He can deal with the reality of solving problems in real time. Not by imagining and having a predetermined solution to a fight. That's rigid, and why you'd have Yarde trying to counter aimlessly for 6 rounds LMAO Because he was already thinking in a biased manner, that "this left hook will solve my jab problems", but reality didn't play out that way. He had a perfect hook for a couple of rounds, probably didn't get to factor in fatigue and punishment to the equation though.