Long-suffering Knicks fans ride wild superstitions into NBA playoffs

On Sunday, 13-year-old Cassidy Berger will head to Madison Square Garden for Day 2 of the NBA playoffs wearing his Immanuel Quickley jersey — and he has no plans to take it off for a while.

“I will wear  it the rest of the playoff run,” Cassidy told The Post of the shirt, which his father, Ryan, bought when the Knicks played the Atlanta Hawks — the same team they are up against on Sunday. “I got it during the game when they beat the Hawks and started a seven-game winning streak.” It’s not his only superstition.