On October 1, Warriors head coach Steve Kerr announced he was taking an indefinite leave of absence from the team due to his ailing back.
Sunday, the second-year coach revealed to reporters that he suffered a rare spinal fluid leak during back surgery on July 28.
"I had a spinal fluid leak during the first surgery. It's very rare, it does happen occasionally, but it happens when there's an accidental nick of the dura that surrounds the spinal cord. But I lost spinal fluid, took about a month to figure out what was going on, a lot of headaches, some other symptoms," Kerr told reporters at the team's practice facility in Oakland, according to ESPN.