The Importance of Specificity in Block Training

"We don't have arms that can hit 5,000 serves a day or even 500 a day," he says. "So the fallback position for us is okay, we got a machine ... The machine can spin it... The machine can hit it real hard to add you." He adds: "It sucks that you can't read the server because clearly that's an important deal right there" It might take too long or longer than if we have the science and better understanding of motor learning in place, coaches say.