Deng was forced to leave Wednesday's Game 5 contest after injuring his wrist in the second quarter. He underwent X-rays that night, but tests came back inconclusive.
The 30-year-old's been an important part of Miami's postseason run, averaging 14.3 points, 6.1 rebounds, and 1.7 assists on 48.4 percent shooting in 12 playoff games.
The Duke product said Wednesday he'll play in Miami's next contest if the injury didn't appear significant.
"Right now we're just being smart. I have to know what it is. As long as it's nothing serious I will be out there Friday (Game 6)," he said.
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