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From the Heat perspective, that’s significant progress.

Spoelstra said tests have concluded that Miller did not have a concussion despite taking blows to the head three times in a five-day span before the break. Miller did some shooting Monday, was held out of practice and will not play Tuesday _ but could be in the lineup as soon as Thursday when Miami visits Chicago.

“I feel good right now and I’m just waiting for them to let me play,” said Miller, who added that he has no problems other than a nagging cold.

And forward Udonis Haslem, who hasn’t played since November because of a ruptured ligament in his foot, was on the court with his team _ in basketball sneakers, not a walking boot _ for the first time in months on Monday.

It was more of an appearance than anything else. Haslem still is targeting a late March return, though that hardly seems guaranteed and his rehab process has several more significant steps.

“It’s still real early,” Haslem said. “Right now I’m taking it day by day. When I’m ready, I’ll know.”

Miami (41-15) is percentage points behind Boston (40-14) for the East’s best record, is two games ahead of Chicago in the conference race, and 5 1/2 ahead of Orlando in the Southeast Division.

“We’re into the final sprint and our focus is not just generically getting our game right,” Spoelstra said. “We want to improve and reach another level, reach higher or another two levels, which we’re capable of. And I think that makes us unique than most of the teams contending. We don’t necessarily know what our ceiling is.”