“With basketball, you could see how he played. You had film from college. You had games from his early career in the NBA, so you could see how he likes to plant. This is how he pushes off, this is how he lunges, this is how he does something,” Grover said. “With baseball, there was no record of it. So every time they made adjustments, I had to make adjustments and he made the adjustment… It was a huge challenge. And everyone knows Michael, that’s what fuels him.”