John Starks -- Patrick Ewing Had Bizarre Pre-Game Superstitions

Patrick Ewing had some weird superstitions that he would follow before EVERY Knicks game ... so says former teammate John Starks.

Starks says one of the most bizarre pre-game rituals that Ewing refused to break was a NO-AUTOGRAPH policy until the game was over.

"You could be on your death bed, he still wouldn't sign autographs before the games," Starks says.

John -- who's now running a whole bunch of companies in his post-NBA career (including a pizza biz, shoe company and clothing line) -- says Ewing had other superstitions, one regarding his shoes.

Starks also talked about his legendary feud with Reggie Miller -- and says despite the heated rivalry -- and the famous headbutt -- the two left their beef on the court ... and now have a friendly relationship.

Check out the clip.