Dirk Nowitzki just turned 40 in June and he's gearing up for 21st season in the NBA, all with the Dallas Mavericks.  

Last season was a bit of a struggle, though, for the future Hall of Famer as he recorded just 12 points per game in 77 games and in April, he had ankle surgery.

With all of those facts in mind, it's no wonder Dirk had the greatest response ever on Twitter to getting drug tested this offseason.

Dirk's Twitter game is just as good as his game on the court and despite the low points per game total last season, he still shot the ball extremely well from beyond the arc (40.9%).
It's going to be fun to see the legend take the court once again for a Mavs team that should be better, especially with the addition of Luka Doncic.
(H/T: Dirk Nowitzki)