Devin Booker is tough as hell — not only did the guy get his nose busted open during the Suns playoff game against the Clippers on Tuesday, he got stitched up and kept playing!!

In fact, the 24-year-old played a KEY ROLE in helping the Suns win Game 2!!!

Here’s the deal … D-Book and Clippers star Patrick Beverley appeared to accidentally clash heads during a play in the 3rd quarter.

You can see in the video … Booker suffered a nasty gash to the bridge of his nose, blood began to drip down immediately.

The Suns star was taken to the locker room where doctors stitched up the wound and Booker returned to action in the 4th quarter.

It looked painful, but Booker battled through the injury and threw a key screen on that inbound dunk to DeAndre Ayton that ultimately helped the Suns win the game.

Suns coach Monty Williams praised Booker’s toughness after the game … saying, “He was probably playing with a great deal of pain.”

“I thought he broke his nose when I saw it. I was worried about the blood continuing to flow.”

Booker may need to wear a protective mask in Game 3 — and maybe even the rest of the playoffs.

But, props to Devin and the Suns — these dudes are leading the series 2-0 and look like real contenders.