<Dd> making an obvious action which clearly impacts on the ability of an opponent to play the ball" </Dd> <Dt> Gaining an advantage by playing the ball or interfering with an opponent when it has </Dt> <Dd> "- rebounded or been deflected off the goalpost, crossbar, match official or an opponent </Dd> <Dd> - been deliberately saved by any opponent" </Dd>

When was the offside rule introduced into football