For so much of this streak, it has been about winning in a variety of ways for the Miami Heat.

They have done it some nights on talent, some on grit and, at times, simply outlasted the opponent.

Add doing it with anger to the list.

The Heat appeared to see a little red, flaring the nostrils after one of their own went down with an early injury. And even though Dwyane Wade returned from a first-quarter spill, the Heat kept their mean streak going in a 107-94 victory Friday against the Milwaukee Bucks at Bradley Center.

And as for streaks, that continued, too. Make it 21 straight victories, meaning they have gone six weeks without defeat.

"That's good to see," Heat coach Erik Spoelstra said. "When your brother goes down, you don't know what's going to happen. Other guys have to step up. That's what our depth is there for. You just don't know what's going to happen."

It started so routine for Miami, with Wade scoring an easy layup and Mario Chalmers connecting with LeBron James for an alley-oop for the game's first four points. It became anything but when the Heat were given their second injury scare in the past three weeks.

With the score 8-4, a driving Wade was met in the lane by Bucks forward Larry Sanders. The shot was blocked, but that was the least of the Heat's concerns. Wade fell to the floor in pain after taking a hard fall. He was tended to by team trainers, giving Wade tests usually reserved for those who have sustained concussions.

"I don't remember much," Wade said. "He hit me and I went down fast. Luckily, I was able to come back in. Doctors said I was fine."

James said, "I hope it's not a concussion, that's the initial reaction. Then when I saw the instant replay, I said, `Yea, he probably does have a concussion.' It was a hard fall."'