Um, they have 3/4 length court combine sprint times, where it is a full sprint without ball handling.
16.4mph or 26kph (using your French imposed system) is decent speed by athlete standards. The slowest players in the EPL floptrot league run about the fast.
Let's look at the 3/4 court sprint time (72 feet or 22 meters) for young NBA 7 footers.
http://stats.nba.com/draftcombine/#!...R_SPRINT&dir=1
Average looks about 3.5ish seconds, with the slowest being 3.65.
In the Ortiz example I posted, he covered 22.5 meters in 3.74 seconds, pulling up as he reached second base, so he slowed down. With Duncan's bad knees and age, I seriously doubt he's faster than the slowest young big coming out. Ortiz looks to be about as fast as the slowest NBA big at the combine, and probably could shave a .10 off his time if he ran straight through and didn't wear a helmet.
Nothing suggests Tim is faster than Ortiz over 100m.
That's how you make an argument. With facts. Not appealing to dumb speculation by measuring physiques.
And it would take a reach of idiotic proportions to think Duncan is competing with an MLB player in throwing events.