Tschirret grew up in Toledo, Ohio and was recruited by Florida State legendary coach Bim Stults, who used his roots in nearby Fremont, Ohio, to pry Tschirret away from Ohio State and Columbia. The decision proved to be a great one for both FSU and its new star swimmer as Tschirret would set school records in the 400 freestyle, 100 and 200 butterfly, 400 medley relay and 400 freestyle relay over his career. He qualified for the 1956 Olympic Trials finishing seventh in the 100 meter freestyle. As a senior in 1957, Tschirret was selected team captain, named FSU Most Outstanding Athlete in swimming and earned All-America honors with a top five finish at the national championship.
After a tremendous career at Florida State, Tschirret moved into coaching with stints at Leon, Fort Lauderdale and Stranahan high schools. Over 13 years as a coach, he compiled a 263-27 dual meet record with 15 district championships. He led two teams to state championships and his 1965 Fort Lauderdale boys team was voted the mythical national champions. He was voted Florida Coach of the Year in 1965 and 1969, and national Coach of the Year in 1965.
Once his coaching career was finished Tschirret moved into school administration and later would head the Tallahassee Sports Authority. He remains an accomplished U.S. Master's swimmer, winning the 200 meter butterfly in 1997.