"I can't start her in handicaps because she'll get too much weight, but there are no real opportunities to race her in mares' races coming up."
Yesterday Walker was still savouring Saturday's victory as much for the thrill of offering the winning ride to former Irish jockey Derek Nolan as for the large cheque on the way to his bank account.
"You should have seen Derek's excitement in the birdcage after the race - words can't describe it.
"He said: 'This isn't the biggest win I've had, it's the biggest I'm ever going to have.' I'm so delighted to have been able to engage him."
Nolan told Walker a couple of jockeys had attempted to intimidate himself and Postmans Daughter.
Good luck with that - neither are the types to be intimidated.
Once the mare worked herself into the open at the 250m she bulldogged her way clear and won with a bit more to spare than might have been obvious.
The Myer Stakes is a weight-for-age 1600m that New Zealand last won when Miss Potential scored in an exciting finish a week after running in the Cox Plate.
The Emirates is a 1600m handicap on the final day of the Melbourne Cup Carnival.
Walker said Postmans Daughter continues to amaze him with her resilience in coming through races in great shape.
"Looking at her this morning I could run her again this week, but there's nothing for her." He said if he goes ahead with the Melbourne campaign he has a couple of options with local riders, although he hasn't ruled out an Australian-based jockey.
Ralph Manning said only the lack of suitable opportunities is the reason Innovation has not been tried as a middle-distance performer.
The way Innovation powered home from near last to easily win Saturday's $56,000 Team Wealleans Matamata Cup (1600m) it's easy to believe she would be a good 2000m performer.
"She has an enormous staying pedigree and Rick [Williams, The Oaks Stud] has been keen to run her over ground, but things haven't fallen into place," said Manning.
The good tracks may arrive soon enough to deny Innovation much opportunity to show her potential beyond 1600m during her present preparation.
The talented mare has won once on good footing from seven attempts, but is unquestionably better when there is rain around.
"That track suited her perfectly," said Manning. "The rain through the programme made the footing nice and loose, she doesn't appreciate those deep, heavy tracks."
The win also provided apprentice Alex Forbes with his first stakes victory.
