Dirk Nowitzki may have lost some foot speed during his long NBA career but he remains an effective scorer. All those long seasons full of postseason games apparently haven’t affected his tennis skills. Nowitzki showcased his blistering first serve against former World No. 1 doubles player Mark Knowles, who may not have been giving 100 percent.
Still somewhat impressive. If nothing else, Nowitzki is an opposing figure standing at the opposite baseline.