Career
20 in August 1977.
Borowiak played number one singles on one of the greatest collegiate tennis team of all time for the University of California, Los Angeles Bruins. Haroon Rahim played number two singles, Jimmy Connors played at number three. Borowiak was inducted into the Intercollegiate Tennis Association (Industry Training Authority) Hall of Fame.
Singles: 11 (5 titles – 6 runners-up)
Doubles: 9 (3 titles – 6 runners-up).