The great ones always have the hardest time knowing when to walk away. Look at me, I'm still here after 30 years.
(For those of you possibly digesting your morning coffee, I apologize for any implication that Dirk Nowitzki, Jason Witten and I have anything in common beyond the fact that we're all taller than Kyler Murray. I will proceed with greater care.)
I was just preparing to write a column about how Nowitzki needs to find a way to let Mavericks fans know that he actually is retiring before playing his last few home games, not so much for them but for him, when thoughts along those lines were derailed by the Jason Witten comeback train pulling into town Thursday.