Brett Favre, 40 years old, has been called old before in regards to playing football, but now he's a grandfather. 

Favre posted on his website, "Deanna and I are very proud to welcome our grandchild Parker Brett to the Favre family.  Parker Brett was born on Friday, April 2, weighing 7 lb. 7 oz. and we're pleased to say that both Mom, Dad, and Parker Brett are healthy and doing great."