The AFL helps Seven to another nightly win, with 723,000 watching the Giants defeat the Lions

The AFL semi-final between the Greater Western Sydney Giants and the Brisbane Lions brought 723,000 metro viewers to Seven on Saturday night.

Despite featuring no Melbourne teams, most viewers came from the Victorian capital, with 354,000 tuning in.

And despite getting primary channel treatment in Sydney, only 54,000 tuned in to watch the Western Sydney team advance to the preliminary final. 112,000 tuned in from Brisbane, and a further 103,000 in Adelaide.