BLUE Diamond favorite Earthquake will have what trainer Peter Snowden described as a "nice little blow out" tomorrow at Flemington. Snowden flew from Sydney to Melbourne today to oversee the gallop, the filly's final piece of fast work before Saturday's $1 million Group 1 race.

Earthquake roared to Diamond favouritism on the back of her effortless win in the Blue Diamond Prelude. 

Snowden said reports from his son Paul had been most heartening about the progress of Earthquake in the past nine days. 

"I haven't seen her since the race, but Paul said she looks outstanding, he's really happy with her," Snowden said. 

Snowden is mindful of how important tomorrow's barrier draw can be on shaping the race. He only has to cast his mind back to last year when Guelph ran in the Diamond. 

"Guelph drew 12 or 13 and she was a touch slow to begin and it just puts you out of play," Snowden said. "She was back and wide and never got into it. Barriers are very important."