Yea, this isn’t going to make Tim Duncan feel any younger.  A photo went around Twitter yesterday of what LeBron looked like when Tim Duncan won his first NBA title.  In 1999, LeBron was a high school freshman and in 1999, Duncan copped his first title. Here’s the thing though — contrary to popular thought, the Spurs actually have a younger average team age than the Heat. Check out the picture along with the age stats…