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In page Craig Heyward:

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In November 1998 Heyward reported blurred vision in his right eye, and was diagnosed with a malignant bone cancer, reportedly a chordoma, at the base of his skull that was pressing on the optic nerve. After it was partially removed in a 12-hour operation, he underwent 40 rounds of radiation treatments and was later pronounced cancer-free; the diagnosis nonetheless ended his playing career.