World No.3 Stanislas Wawrinka has asked the ATP to officially call him 'Stan'.
Wawrinka’s manager, Lawrence Francopan, told the “Tages-Angzieger”, (Translated) “Stanislas is long and bulky in the written form, also not easy to pronounce. There was always confusion. Furthermore him anyway call all, ‘Stan the Man.’”
It's unclear whether Stan has changed his name in official documents, or just for tennis. Either way, it won't change much for most tennis fans!