from watching the Italian football on Channel 4 and earlier than that, that there are a different interpretations of the own goal rule in different countries. And that what you've described was the UK way but in other places any deflection was an own goal.
This may be outdated now and all the rules may be aligned. Not sure.
(,
Wed 21 Oct 2009, 13:05,
archived)
This may be outdated now and all the rules may be aligned. Not sure.