Public transport workers who shut down the rail system on Friday have been encouraged to create mayhem for the AFL during this month's finals series.

Meanwhile, 70 more trains will be cancelled early tomorrow morning due to further strike action against Metro.

A four-hour stoppage is planned between 2am and 6am on Saturday, the third consecutive day in which industrial stoppages will force trains off the rails.

Metro has cancelled 66 morning services and four late night services after 1am, meaning sone late-night revellers may be stranded in the city.