they didn't suspect not because they were veterans, but because the probability was low, lower than your chance of being a star player. There's no need to make things up; I'm only playing my second game here, and the only person I considered "one of us" was the GM.
P.S. I couldn't resist and corrected "сторожа" (guard) to "старожила" (veteran) in the quote. No one has canceled grammar.
Profanum vulgus et inscium ne attrectato:
Omnesque Astrologi Blenni, Barbari procul sunto
Qui aliter facit, is rite sacer esto