ATLANTA — LeBron James somersaulted onto his feet and pounded his chest.
With the kind of birthday energy normally reserved for a toddler after a big slice of cake, James had just flown all over the court, chasing down a tipped pass, missing a layup, running back onto the court and finally scoring, getting fouled in the process.
On the day he turned 38 years old, James looked like anything but a tired, old road-weary veteran.
