It's perhaps too early to dismiss Casselman's NHL aspirations altogether, but so far he has not done in the big time what he proved earlier he could do quite well, score. During his four years at Clarkson University he developed into a reliable forward and became Detroit property in the 1990 Supplemental Draft.
Cassselman played with Toledo in the ECHL in 1991-92 and scored 39 goals, a good benchmark, but not final proof of his abilities. When he had the chance to play a step up, in the AHL, his scoring diminished and the Red Wings allowed his contract to elapse.
Florida signed him in the fall of 1995, but although he got into three games he went scoreless and played the rest of the year in the AHL. From there he went down to the IHL and then to Europe, where he had played ever since, out of the limelight of the NHL.