Australias players union has called for a reduction in the bans handed out to Steve Smith, David Warner and Cameron Bancroft for their part in the ball-tampering scandal in South Africa last week, describing them as disproportionate. Former captain Smith and former vice captain Warner were handed 12-month bans, and batsman Bancroft suspended for nine months by Cricket Australia after the latter was caught using a piece of sandpaper on the ball in the third Test in Cape Town. The proposed penalties are disproportionate relative to precedent, Australian Cricketers Association (ACA) president Greg Dyer told a news conference in Sydney on Tuesday.