Wednesday night in Cleveland, the Knicks can deliver the knockout blow. In Game 5 of their first-round playoff series, the Knicks can end one drought — and begin focusing on the next.

Despite the team’s lone All-Star (Julius Randle) — yes, Jalen Brunson should have received the nod at the time — and the Sixth Man of the Year runner-up (Immanuel Quickley) offering little help, the Knicks’ depth, toughness and clutch play has put them one win from pulling a first-round upset and reaching the second round of the playoffs for the first time in a decade and the second time this century.

What was once a given — from 1989 to 2000, the Knicks reached the second round 11 times — is now cause for celebration.

And what once looked like the ceiling has suddenly been replaced by the sky.