Derek Fisher is telling his side of the story, and takes little to no blame for the unraveling of the Knicks or his personal life.

Fisher wrote a first-person essay for Sports Illustrated’s The Cauldron website, giving his version of why he was fired by the Knicks and of the infamous incident in which he scrapped with former Lakers teammate Matt Barnes over Barnes’ estranged wife, Gloria Govan, whom Fisher is dating.

The Post first reported that Barnes fought Fisher at Govan’s home in Los Angeles in October.

“I don’t know what was going through Matt’s mind that day in October when he showed up unannounced at Gloria’s house, and started swinging,” Fisher wrote.

“I didn’t retaliate. No one who was there did anything but try to get him to calm down, particularly because Matt and Gloria’s children were present. There was no fight.”

Fisher explained his relationship with Govan by saying she and Barnes, and Fisher and his ex-wife, had been long separated and he barely knew Barnes when they were teammates for two seasons with the Lakers. Most of Fisher’s frustration seems to be focused on the media and the reports that he had been fired because of the lurid details of his relationship.

“Not only is any such insinuation untrue, it’s downright offensive,” Fisher wrote. “The reality is that NBA coaches get fired for all sorts of different reasons. … When the organization informed me of its decision, the conversation was short.

“The underlying message was that things weren’t working out the way they had hoped. … At no time did anyone at that meeting express to me that stories about my personal life were distracting from the collective task at hand, or — more important — that any of my players had expressed to management that they had lost confidence in me as their coach. Nothing remotely like that was ever brought up or discussed.”

Fan yelled at Matt Barnes: "How's Derek Fisher?" Barnes replied "He got his ass whooped, that's how." (via @Marc_DAmico)

— Legion Hoops (@LegionHoops) March 10, 2016

Fisher also chided the media for treating Govan like a “piece of property” and a “pawn.” The saga has continued to play out in recent months as Barnes’ anger has not subsided. He continues to take shots at Fisher, including Wednesday night in Boston.

Fisher did not help the mess by appearing in an Instagram photo with Govan, about to depart on a group vacation, several days after he was fired.

The Post has reported the main reason Fisher was let go is because of a lack of communication with team president Phil Jackson, who picked close friend and assistant Kurt Rambis to take over on an interim basis. Fisher hints that he thinks the firing was unwarranted.

“At the time, we were going through a difficult 1-9 stretch, but to its credit, the entire team was still responsive to my leadership, decision making and coaching,” he writes. “They hadn’t given up on me. They weren’t questioning my integrity. My relationships with my players were good and becoming stronger.”