Golden State coach Steve Kerr had back surgery in early July due to a herniated disc problem.
The recovery was going well, but at the beginning of this month there were unexpected complications and he will have to spend some more time in rehabilitation.
That is why the management of the current champion made the decision that the teams at the start of the new season in the NBA league will be led by assistant Luke Walton.
This information was confirmed for the American media by Bob Meyers, general manager of the Warriors.
Walton has been on Golden State's coaching staff since July 2014.
The "warriors" begin their defense of the throne on October 27 against New Orleans.
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