Dirk Nowitzki Has Savage Roasting In Message To Mark Cuban 😱💀😂 If there's one thing you can say about Dallas Mavericks star Dirk Nowitzki and his battle with Father Time, it's that the 40-year-old is aging as gracefully as one can. The Mavs big man has always been open about his rather advanced age and has proven it yet again by roasting himself anew.