He was at Duke University on Friday seeing a specialist and owner Joe Lacob told Bloomberg Radio that Ker had a "spinal cord leak" procedure on his back.
The Warriors were forced to rally from a nine-point deficit Saturday and Durant's 38 points got most of the attention.
Trailing 75-74 early in the fourth, Warriors launched a 10-4 scoring run to regain a lead they wouldn't relinquish.
"I try to use my length and shoot over guys", Durant said.More news: Le Pen speech plagiarism 'a wink to former candidate Fillon'
They know what it is like to win a championship.
Golden State's ability to shift the offensive strategy wouldn't be possible if not for Curry's willingness to slide into more of a sidekick role, which he did in the fourth quarter as Durant accumulated a usage percentage of 43.5, compared to Curry's 31.8.
Curry finished with 23 points on 6-for-20 shooting. Gordon Hayward led the way with 29 points and six assists, Rudy Gobert added 21 points with 15 rebounds and four assists while Shelvin Mack chipped in with 11 points and five assists.
"Myself and the other 19,000 people in the arena and everybody watching on TV saw the same thing I saw", Curry said. "It's an easy decision to at that moment (to defer to Durant)".More news: Wizards forward Oubre ejected for bowling over Olynyk
Can the Golden State Warriors make the finals again? The trio of Curry, Durant and Green has been too much for the Jazz. They slowed the game down, they got Draymond Green in foul trouble and they got in his head, and they forced the Warriors into a bad shooting night. After a kickback pass to Andre Iguodala, Curry (23 points) weaved around a screen and, when Rodney Hood failed to recognise and help in time, Curry jetted off the down screen, caught and planted a wing 3 to put the Warriors up 89-84. Nevertheless, it still wasn't almost enough as Golden State's onslaught of talent left the Jazz reeling and desperate for answers.
The Jazz have needed everything their leading scorer has been able to give them in this postseason. "That's why they're who they are".
Mostly unchallenged to start these playoffs, the Warriors were delivered a stiffer test on Saturday night in Salt Lake City. He put in just seven points on 3-of-12 shooting from the field and went 1-of-5 from deep. He has hit at least one 3 in all 65 playoff games he's played. He was aggressive in the first quarter, taking 10 shots and scoring 13 points.
It seized the lead for the first time in the series when it went up 48-47 in the second period, and led 50-49 at half-time. Now he is trying to do it for a new team, Golden State.More news: Akhilesh should step down as Samajwadi Party chief: Aparna Yadav
The Jazz's starting point guard has missed the last two games while dealing with soreness in his big toe.