Miami Heat guard Tyler Herro is set for surgery on his broken hand on Friday, which will keep him out of action for between four and six weeks.

Herro, the reigning Sixth Man of the Year winner, has averaged 20.1 points, 5.4 rebounds and 4.2 assists per game this season in his first campaign as a full-time starter.

He suited up for a career-high 67 regular season games, but suffered a broken hand during the first half of Game 1 in Miami's first round playoff series against the Milwaukee Bucks.

The Heat went on to win Game 1 without Herro, as Milwaukee's two-time MVP Giannis Antetokounmpo also left in the first half following a hard fall onto his back, but while Antetokounmpo could return in Game 2, Herro is set for a lengthy stint on the sidelines.

Speaking to reporters on Tuesday, Herro said he likely will not play again this postseason unless the Heat reach the NBA Finals.

"That's the hope," he said. "Get to the Finals and I can get back for that.

"I watched the video, and I still don't know, like, where I hit my hand. I still don't know. 

"I probably shouldn't have dove on it, but I was trying to create some energy. We were on the road, in my hometown. Just trying to play hard.

"Being in the playoffs, you work so hard all year to be in this moment. I feel like I had some things to prove this postseason. It was a tough moment – I still can't believe it."

Game 2 will be played in Milwaukee on Wednesday, before the series heads to Miami for Games 3 and 4.