Carmelo Anthony netted 18 of 31 points in the third and Langston Galloway added 13 as the Knicks won for the fifth time in seven games.
Linsanity was a bust on Sunday. Former Knicks sensation Jeremy Lin was a flop in his Garden return.
After drawing criticism over a slow start, Cleveland has made several moves that have paved the way for a successful run. They face a Los Angeles team that has been playing much better defense than it has for much of the season.
Hassan Whiteside scored half his 20 points during a dominant stretch spanning the third and fourth quarters to help the visiting Miami Heat survive a Boston Celtics rally and end a two-game skid with an 83-75 victory.
The game, which featured only one star player, Carmelo Anthony, was not shown on ESPN, which instead broadcast a charity bowling tournament that took place over three weeks ago.