Have you ever heard about number 13 considered to be unlucky? Like, Friday the 13th and so on? Many airline companies don't have Row 13 on their planes (after 12, there goes 14 immediately).
Besides, Court 2 is the Graveyard ONLY at Wimbledon (kinda local tradition).
it depends of the culture. The Italian don't like the 17 because in latin you write it XVII, the anagram is VIXI= "I've lived" and if you've lived then it means you're dead!
In Italy there is no floor Nr. 17, room Nr. 17, planes Alitalia have no sit Nr. 17... exactly like you explain for the 13 and i was told that the Chinese dislike the 4.