Fish also comes with the knowledge of what it takes to win in international competition. He helped the U.S. Davis Cup team reach the final back in 2004, and also won a silver medal at the 2004 Olympics.
The American has also stayed close to the game since retiring. In addition to coaching stints with the USTA, Fish has assisted Jack Sock—a likely Davis Cup competitor—and did some work as a broadcaster for ESPN.
Now, he'll return to the sport in a new role, in a new version of Davis Cup, looking to help his country win its first title since 2007.
"It's been something that is a dream job for me, something that I won't take for granted, and am completely honored," Fish said on Wednesday. "It's just incredibly special to even be mentioned as a possible candidate.
"To be the Davis Cup captain, the next Davis Cup captain, I'm incredibly humbled. I can't even express how excited I am, how excited I am that the players have supported the decision. The friendships I've made throughout the years, relationships of all the players, not just the top players, is very special."
Members of the USTA felt strongly that Fish's Davis Cup experience would make him a good fit for the position. But they also noted that he is a good role model for children, citing his work with Net Generation in the process.
“As a former player, I know Mardy will inspire our players to succeed for years to come,” said USTA Chairman of the Board and President Patrick Galbraith.
"Mardy really cares about every kid that picks up a racquet," added USTA Player Development General Manager Martin Blackman. He also said that the USTA saw an opportunity to really expand the role of the captain, and that Mardy will provide a "year-round presence".
During the announcement, Fish expressed that he didn’t always get the most out of himself as a player, but he has learned from his mistakes. At the same time, he insisted that he is 100 percent committed to using his past to help get every ounce out of his players.
"I've answered the call every time [former captains Patrick McEnroe] and Him had asked me to play," said Fish, "whether it was a practice partner or an actual player on the team. I can't tell you how excited I am to get started, to start sort of integrating the future players with the current players.
"We've got a really fun and exciting time in U.S. tennis right now."