A native of Elmhurst, New York,[4] Konchalski played for coach Jack Curran[5] at Archbishop Molloy High School[6] before embarking on a college career in Canada in 1962.
[7] Acadia University's basketball coach Stu Aberdeen had discovered Konchalski at a tryout which was held at Archbishop Molloy High School in the spring of 1962.
[8] Konchalski guided Acadia to its first ever national title in the CIAU in 1965, setting single game highs 41 points and 17 field goals,[9] while being presented with the Jack Donohue Trophy as the tournament Most Valuable Player.
[20] In 2010, Konchalski received the Jean-Marie De Koninck Coaching Excellence Award, which is being given to an "individual who has made an outstanding contribution to university sport as demonstrated by long-term commitment and leadership as a coach at the local, provincial, national and/or international levels of Canadian university sport.
[24] Konchalski was named assistant coach of the Canadian Men's National Team in 1973 and had that job until 1988, including the Olympic Games in 1976, 1984 and 1988, serving under Jack Donohue.
[14] He later became a mentor coach with Canadian Junior National Teams, including the U19 squad that won gold at the 2017 FIBA Under-19 World Cup.