Career
Grosser came to SpVgg Unterhaching in 1983. Before he played in the youth department of Football Club Bayern Munich and Turn- und Sportverein Forstenried. In 1989 he became a midfield player with Unterhaching from Bavaria League in the 2.
Bundesliga and completed the season 1989-1990 (26 games) with one goal for his club
After his active career, he worked for ten years as coach of the seniors B, and was also a committed youth coach. Grosser died during an indoor training.
He suddenly collapsed and could not be revived. Grosser was the son of Peter Grosser, a former player at Turn- und Sportverein 1860 München.