(Photo by Issac Baldizon/NBAE via Getty Images)

MIAMI (AP) Chris Bosh's plan to resume playing is now in jeopardy, after medical examinations performed in recent days convinced the Miami Heat that he is not healthy enough to return to the court.

And Bosh may have provided a clue why.

The Heat announced Friday that they still cannot clear Bosh for a resumption of basketball activities, based on the result of his preseason physical - a series of tests conducted over the past few days. Their announcement came two days after Bosh revealed in the first chapter of a documentary series about his saga that he had multiple clots in February.

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