VIDEO: Kyrie Irving makes terrific block on Steph Curry drive, runs floor with ease

Quiet down, doubters.

For the last nine days, Kyrie Irving has worked to rehabilitate a balky left knee while hearing how his defensive shortcomings may render the Cleveland Cavaliers incapable of stopping MVP Steph Curry. It's a valid concern. Irving's defense on and off the ball is problematic even when healthy, and the Golden State Warriors offense allows for exactly zero lapses.

For at least one first-quarter possession, Irving showed those concerns may be overstated, and that his defense may be tolerable, after all. On an early Curry drive, Irving briefly lost half a step, recovered, and erased a Curry layup attempt with a fantastic block:

His knee looks to be doing just fine, too, as it didn't slow him down a bit on this steal-and-fastbreak later in the frame:

The Cavs will need Irving at 100 percent to hang with the Warriors over seven games, and the early returns are encouraging. Cleveland will have to hope a full game of running through a never-ending maze of screens won't slow their point guard down any.