Tsioropoulos played college basketball at the University of Kentucky under legendary coach Adolph Rupp. As a sophomore in 1951, he was a member of Kentucky's NCAA Championship team, which defeated Kansas State 68-58 in the Championship game. In the fall of 1952, a point shaving scandal involving three Kentucky players over a four-year period forced Kentucky to forfeit its upcoming season, which would have been the senior year for Tsiroropoulos and future Hall-of-FamersFrank Ramsey and Cliff Hagan. The suspension of the season made Kentucky's basketball team, in effect, the first college sports team to get the "death penalty", which actually was nothing more than the NCAA asking members schools not to schedule Kentucky, and not mandating it. Tsioropoulos, Ramsey and Hagan all graduated from Kentucky in 1953, and as a result, became eligible for the NBA draft. All three players were selected by the Boston Celtics: Ramsey in the first round, Hagan in the third, and Tsioropoulos in the seventh. All three also returned to Kentucky for one more season, despite graduating. After finishing the regular season with a perfect 25-0 record and a #1 ranking in the Associated Press, Kentucky had been offered a bid into the NCAA Tournament. However, then-existing NCAA rules prohibited graduate students from participating in post-season play. The Wildcats declined the bid because their participation would have forced them to play without Tsioropoulos, Ramsey and Hagan, thus jeopardizing their perfect season. Tsioropoulos' #16 jersey was retired by his alma mater, and he is in the University of Kentucky Athletics Hall of Fame.
Professional career
Tsioropoulos spent some time in the Air Force before joining the Celtics in 1956. As Tom Heinsohn's backup at small forward, Tsioropoulos played three seasons with the Celtics, winning NBA championships in 1957 and 1959. In 157 NBA games, he averaged 5.8 points per game. His best NBA season was 1957–58; in which he averaged 7.7 points per game. This season was the only one of his three NBA seasons in which he played in the playoffs; he averaged 6.3 points per game. That year, the Bob Pettit-led St. Louis Hawks defeated the Celtics in the NBA Finals.
