Which player has scored at two world cups for different countries?
As well as Prosinecki, you could have Klinsmann, Voller, Matthaus or, if you count penalties, Riedle. All scored for West Germany in 1990 and Germany in 1994.
Had to look up the Sunderland/Villa one. Very good.
Which is the only Premiership or Football League club which contains no letters with closed paths (i.e. in which none of the letters can be 'coloured in')? I think the answer is the same in both lower case and upper case.