Danny Colangelo was Elon’s only four-time first-team All-American in
any sport. He was talented, tough, and durable.
I learned from Danny how valuable the net player was in doubles. No
matter who I played Danny with, he’d play so well at the net that his
partner, if he didn’t double fault three or four times, would hold serve.
Danny could learn too. I convinced him at his level he needed to add
an underspin forehand return. Danny was going to play people who serve
so well he wouldn’t have time for a giant backswing. He mastered it
immediately and used it to great advantage.
What I learned was part two of the “learning.” Danny realized that if he
hadn’t had that return, others didn’t either. He began to hit his quality
serves at talented opponent’s forehands.

Danny told me he saved that shot for a “back-up” point on the tour and
was always surprised how many good players couldn’t hit it, mostly due to
overswinging.