The “Nellyball” era has ended. The Golden State Warriors are reportedly set to announce the resignation of head coach Don Nelson. The 70-year-old Nelson has reportedly agreed to a buyout and will be replaced by assistant Keith Smart. An official announcement is expected at the team’s media day on Monday. This is the first big front office move for the Warriors under their new ownership group led by Joseph Lacob. Nelson is the NBA’s all-time leader in head coaching wins, with 1,335 victories over 31 seasons. He has spent the past four seasons wtih Golden State, following a successful previous stint as head coach of the Warriors in the late 80s and early 90s. The Warriors were a disappointing 26-56 last season, finishing with the third worst record in the Western Conference. Smart, best known for hitting the game-winning shot for Indiana against Syracuse in the 1987 NCAA Championship game, has been a Warriors assistant for seven seasons.