Grant Hackett has completed a stunning form revival with a convincing victory over a world-class field in the 1500 metres at the Japan Open in Chiba on Thursday night.

The big man posted a winning time of 14 minutes 48.70 seconds ahead of reigning world champion Mateusz Sawrymowicz (14:50.72s) and Korean superboy Park Tae Hwan (14:58.43).

Hackett was chuffed to have found form so quickly after his disastrous showing at this year's world championships in Melbourne.

"It is just nice to be able to turn things around pretty quickly from a few months ago, I certainly feel that everything is on track for me," he said.

The result was a massive confidence boost in Hackett's bid to win a third straight Olympic 1500m title next year in Beijing.

His performance topped a brilliant night for the Dolphins with five individual gold medallists.

World champion Libby Lenton (57.88s) continued her fine meet by winning the 100m butterfly with compatriot Jess Schipper (58.36s) claiming third place.

Leisel Jones (2:21.45) tamed American rival Rebecca Soni in the 200m breaststroke and Bronte Barratt continued her breakthrough meet by comfortably winning the 200m freestyle in 1:57.92.

Kenrick Monk (1:47.25) won the 200m freestyle but felt he still had major improvement in him in the four-lap event.

In Friday's action, Lenton and schoolgirl Cate Campbell battle it out in the 50m freestyle and sprint star Eamon Sullivan is in the men's one-lap event.

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