Throughout the New York Knicks’ playoff run, thousands of deliriously happy fans have flooded the streets outside Madison Square Garden, often invoking a two-word rallying cry: “We outside.” They won’t be outside on Wednesday.

My beloved New York Knicks—the team of my youth, the team of my life—have won 13 straight playoff games and are up 2–0 in the best-of-seven NBA finals against the San Antonio Spurs.

“NEW YORK: We’re back outside the Garden. We have approved a ticketed MSG watch party for Game 4. More details soon. As we prepare to watch together, let me be clear: this is a historic, joyful moment...