Gai Waterhouse will chase back-to-back wins in the Group I Australian Guineas (1600m) next month with in-form colt River Wild.

Waterhouse won the 2015 edition of the race with now-retired stallion Wandjina.

River Wild’s most recent victory at Rosehill last Saturday prompted talk of either a Randwick Guineas or Australian Guineas start before a decision was made in favour of the latter.

The Flemington feature carries prizemoney of $750,000 which is $250,000 less than the Randwick Guineas.

Waterhouse first won the Australian Guineas back in 2005 with another sire in Al Maher.

Online bookmaker Sportsbet has River Wild listed as a $67 chance in its Australian Guineas futures market.