Craig Sager's leukemia is no longer in remission and has been given a dire diagnosis by his doctors.

Sager revealed to HBO's Real Sports that doctors told him last month the cancer had returned, and gave him “3-6 months” diagnosis to live.

“I’ve already had two stem cell transplants. Very rarely does somebody have a third,” Sager told HBO. “So I have to maintain my strength, so I can go through this.”

“...I’m not going to be that 3–6 months. I‘m going to be that five years. I’m going to make medical history. ... I’m fighting this thing to the end. I have too much to do.”

Sager, 64, was first diagnosed with leukemia in April 2014 and the disease returned in March 2015, forcing him to take the rest of the season off.