Winters coached the Grizzlies from 1995 to 1997, the franchise's first two seasons of existence, and returned for a short head coaching stint in 2001-02 for 59 games at Golden State. His teams were rather, let's say, unfortunate during these times, recording a yucky 19.6% winning percentage. He also was an assistant coach at Princeton under Pete Carril, the pioneer of the Princeton Offense. Winters also coached under Hall of Fame coach and player, Lenny Wilkens. He fared better as a player, making the All-Star Game twice and being named to the All-Rookie Team in 1975. He was then promptly traded to Milwaukee as a part of the package that returned Kareem Abdul-Jabbar.
Leibovitz was a top assistant under John Chaney at Temple for years and served as acting head coach for a few games while Chaney was suspended. He would then become the head coach at Hartford, going 46-82 as head coach. In his second season, Hartford would reach its first America East Championship game and have its best record as a member of Division I at 18-16. Leibovitz would resign from the position to become an assistant coach at the University of Pennsylvania. If you want to read more about him, this is a good piece.
Better than Dean Winters, for sure. Jury's still out on whether I would have preferred Annie Leibovitz, though.