Grok:
Donald Trump has been a Knicks fan for decades — described as “longtime,” “lifelong,” or a “big Knicks fan” long before his political career.
sports.yahoo.com
Key Timeline:Public affiliation dates back to at least 1975 (when Trump was in his late 20s): He worked as a real estate consultant/adviser for the owners of the Knicks and Madison Square Garden during a potential sale of the arena.
abcnews.com
He has been a courtside regular in the 1990s, attending games with figures like Marla Maples (e.g., 1991, 1994 Finals, 1999). Photos and records show him at Knicks games going back to at least 1991.
abc7ny.com
NBA Commissioner Adam Silver has confirmed Trump was a prominent Knicks fan “before he ever ran for office” and attended many games/drafts at MSG in the “old days.”
nba.com
Trump himself has repeatedly said things like: “I've been a Knick fan for a long time.”
Trump (born 1946) and the Knicks franchise (founded 1946) are the same age, and as a lifelong New Yorker, his support aligns with growing up in the area during the team's successful 1970s era (though he wasn't yet a public figure then).
abcnews.com
In short, he's been publicly associated with the team for roughly 50 years, with visible fandom since the 1990s. There's no single “conversion” moment — it's tied to his New York roots.
This is what the TDS sufferers who complained that he's going to this game after he skipped his son's wedding don't understand. He's been a Knicks fan longer that Don Jr. has been alive.
I’ll forgive him, but GO SPURS GO!!