[1] A left-handed player, Fritz was born in Yuma, Arizona and played collegiate tennis for East Texas State.

He was a member of the university's 1972 NAIA championship team, in a year he also won the singles and doubles individual titles.

[1] Fritz's best performances on the professional tour was winning the South Florida Open Championships in West Palm Beach in 1977 against Larry Loeb on the ILTF Independent Tour a world wide circuit of tournaments not part of the grand prix,[1] and a runner-up finish at the Lagos Open in 1980 on the Grand Prix tennis circuit.

This included the longest ever singles rubber in Davis Cup history, which he won over Jorge Andrew of Venezuela 16–14, 11–9, 9–11, 4–6, 11–9, for a total of 100 games.

[4] He played his final singles event in 1984 at the Montreal Alcan Indoors part of the Winter Circuit Alacan.