Jan Koster
He played a total of 16 seasons in the Dutch volleyball league. He started playing with SUES and he played afterwards with SFC in Assen. Koster was a key person for the team.  After Hans Zaaijer and Jelke Smit left the club, Koster also left SFC in 1973 and became player and trainer with Oranje Nassau in Groningen. He also started studying economics in Groningen. The team was very dissatisfied that he left, also because negotiations had already been done with him. However, he returned as coach at SFC for the women’s team. He trained the women’s team for three seasons until 1977. He was successful with the team. He stopped because he couldn’t combine it anymore with his job as pub owner. He was from 1981 coach of Lycurgus, replacing .