Newcastle Eagles have agreed to a request from assistant coach Billy Spragg to quit his role after nine years - with son and reserve player Will Spragg following him out of the club.
Spragg Sr. joined the club in 2001, joining then head coach Tony Garbelotto, before becoming Fab Flournoy's regular number two.
Managing Director Paul Blake, in a statement, said “We wish Bill and Will all the best in their future endeavours and thank them for the huge role they have played in bringing success to the team in recent years."
However, with the reasons unknown for the exit, this is a huge blow for Newcastle. Spragg, hugely respected within the BBL, has been the key factor in allowing Flournoy to function as both a player and coach while other similar arrangements around the league have floundered.
While it is understood that the American is seeking a replacement "in the long-term", it will likely hunder the team's chances of retaining their title.
"I was sad to see Billy go," Flournoy told The Chronicle. "He was my friend and I think in many ways he was the Ying to my coaching Yang."