Gai Waterhouse stablemates Fusakeo and Kontiki Park can confirm Grafton Cup aspirations when they clash at Rosehill on Saturday.

Grafton Cup plans for two Gai Waterhouse runners will become clearer when they race at Rosehill on Saturday.

Fusakeo and Kontiki Park will both step up to 2000 metres for the first time this campaign when they clash under benchmark conditions.

"They are our Grafton Cup horses and Saturday's race will tell us a lot about their prospects," Tulloch Lodge racing manager Bruce Slade said.

Kontiki Park will be trying to end a sequence of placings, the most recent behind Irish Love over 1800 metres at Rosehill on June 4.

His first foray into distance racing last year resulted in a promising second over 2400 metres to subsequent Melbourne Cup placegetter Maluckyday in the Tattersalls Cup at Randwick.

Fusakeo, placed in the Magic Millions Stayers' Cup in January, is expected to lift on two unplaced runs since a spell.

The $150,000 Grafton Cup (2350m) is on July 14 and Waterhouse will be chasing her second win in the Listed race after her 2006 success with Rocking On.

Meanwhile, a Ramornie Handicap start is out for Canberra sprinter Onthelookout.

Grafton's feature sprint, to be run over 1200 metres on July 13, was considered for the five-year-old after a last start win at Randwick but co-trainer Paul Jones said other options were now being explored.

Onthelookout will line up in a 1350m race at Rosehill on Saturday.

"Probably now the Ramornie is not going to be an option," Jones, who trains in partnership with his mother Barbara Joseph, said.

"We'll look to hang around in Sydney, there's not a lot of difference in prizemoney and there are a couple of suitable races."

The Listed Civic Stakes (1400m) at Rosehill on Saturday week is firming as a target race.

"It's something we have in the back of our minds but it depends on how he races on Saturday and pulls up. It's one option we have," Jones said.

A rider for Onthelookout on Saturday has yet to be confirmed.

Apprentice Adam Hyeronimus partnered him to a 1-1/4-length heavy track victory in the PJ Bell Country Cup (1400m) on June 13 but he is suspended.

"He has got 55-1/2 kilos so there's probably no need to claim," Jones said.

"With a maximum of 12 to go around we may look for a senior rider."