Victor Wembanyama Met With 'Overrated' Chants From Knicks Fans In MSG Debut

Victor Wembanyama got the opposite of a warm welcome in his first game at Madison Square Garden ... 'cause a bunch of ruthless Knicks fans made it clear they're not believing the hype surrounding the hoops phenom -- chanting "overrated" in the middle of the game!!

Of course, the San Antonio Spurs' No. 1 overall pick ruffled some feathers with the home crowd prior to Wednesday's matchup with New York ... when he said the Mecca wasn't as big as he expected.

Knickerbocker backers promised to give the 19-year-old hell as a result of his comments ... and they held true to their word throughout the contest -- booing and heckling the 7'4" hooper every chance they got.

Their efforts may have worked ... 'cause Wemby didn't have his best outing -- going 4-14 from the field en route to 14 points, 9 rebounds, 2 assists and a block.

Some people on social media weren't too pleased with the Knicks fans' antics -- saying it's wild to make such a claim eight games into his career ... especially when he's had some amazing performances in the Association so far.