Gregory Kelser (born September 17, 1957) is an American former basketball player and current television color commentator.

Kelser was a key member of the 1979 NCAA Champion Michigan State Spartans and spent six seasons playing professionally in the National Basketball Association.

[1] In East Lansing, Kelser earned him the sobriquet "Special K", a play on the Kelloggs breakfast cereal.

[4] In his junior year (the freshman year for new additions Earvin "Magic" Johnson and Jay Vincent) under coach Jud Heathcote, the Spartans squad had an impressive season, racking up a 25–5 record, the Big Ten Conference title, and a berth in the 1978 NCAA tournament,[5] where they made it to the regional finals before losing narrowly to eventual champion Kentucky, 52–49.

[6] Then, as a senior, he and Johnson led the Spartans to the 1979 NCAA tournament championship, defeating Larry Bird and Indiana State 75–64.

Kelser was often on the receiving end of spectacular alley-oop passes from Johnson and later wrote a book about his basketball experiences at MSU.

The memory is made more special, because I got a chance to be a difference maker, and, that’s something I’m proud of.”[9] Kelser finished his career at Michigan State averaging 17.5 ppg and 9.5 rpg and was named third-team All-American.

The Pistons, burned in recent history by similar knee issues with star Bob Lanier, attempted to move on, but a December 1980 trade with the Seattle SuperSonics was rejected after Kelser failed his physical.