Andy Isaac -- a popular Detroit sports fan -- has passed away after a nearly two-decade battle with cancer.
The announcement was made to his X account Thursday morning ... with his loved ones saying, "Andy passed away peacefully this morning beside his loving family. We thank you all for your support and love over the years."
The news comes on the heels of Isaac announcing he was entering hospice care, as his battle with the disease "has finally taken its toll on me, it has finally stripped me of my quality of life.