In 1973 Matthews quit playing tennis and tried his hand in the business world, selling air bubbles to cover tennis courts; however, the growing popularity of
squash meant that there were fewer and fewer outdoor courts. Aged 29, Matthews moved to the United States, and became a coach at
Harry Hopman's
Port Washington Tennis Academy and also in
Norwalk, Connecticut. At the former, he worked with a promising 15-year-old
John McEnroe. "I was still fresh off the tour at the time, so could give him a decent game." In 1976 he became manager at the Four Seasons Racquet Club in
Wilton, Connecticut, and has been there ever since. Nine years later, he bought out the original owner. "You can always say, 'Gee whizz, I could have done better' but in terms of how my life turned out, I'm very happy. I'm [at the time of interview] still the last British male to win a singles tournament at Wimbledon, and I'm proud of that. For the past 30 years I have considered myself an entrepreneur, and I've managed that in the States with no name recognition." In 1981, Matthews briefly picked up his racquet again after eight years to take part in the
United States Tennis Association's National Men's 35 Clay Court Championships at the Palm Beach Polo and Country Club in
Palm Beach, Florida. ==Personal life==