A stunning form turnaround has convinced Melbourne Victory star Archie Thompson his side can win the A-League title.

After a run of three straight defeats, the Victory produced a dazzling display against Newcastle on Sunday, whipping the Jets 5-0.

Victory players celebrate one of their five goals on Sunday. Credit:Getty Images

The win was crucial, Thompson said, with the finals looming and the Victory desperately searching for its earlier form.

''It was very important because we had three weeks of very disappointing results, especially the last two when we really could have stamped some authority on this league,'' he said.