A doubt surrounds talented filly Glissade lining up against her stablemate and raging race favourite Sepoy in the Blue Diamond Stakes.Sydney-based trainer Peter Snowden will decide after trackwork on Tuesday whether the daughter of Redoute's Choice will take her place in Saturday's $1 million Group One feature.TAB Sportsbet has quoted Glissade on the fourth line of Blue Diamond betting at $13 while the unbeaten Sepoy dominates the market at $1.70.Snowden's son and assistant trainer Paul Snowden

A doubt surrounds talented filly Glissade lining up against her stablemate and raging race favourite Sepoy in the Blue Diamond Stakes.

Sydney-based trainer Peter Snowden will decide after trackwork on Tuesday whether the daughter of Redoute's Choice will take her place in Saturday's $1 million Group One feature.

TAB Sportsbet has quoted Glissade on the fourth line of Blue Diamond betting at $13 while the unbeaten Sepoy dominates the market at $1.70.

Snowden's son and assistant trainer Paul Snowden said Glissade took longer than expected to recover from her eye-catching three-quarter length second to One Last Dance in the Blue Diamond Prelude for fillies nine days ago.

"She has got to pull out the biggest run of her career to figure in the Diamond and we want to do the right thing by the filly," Snowden said.

"The last time she raced it was extremely taxing on her.

"She went into the race in really good order but came out the other side a little bit jaded and took a couple more days to get back on her tucker."

One Last Dance, who won the fillies Prelude, has already been pulled out of the Blue Diamond and been sent for a spell while her stablemate Hallowell Belle, who was third in the Prelude, is the Diamond second favourite at $8.50.

Snowden said Sepoy was in "great order" and would have a searching gallop on Tuesday morning in preparation for the Diamond.

"He needs a good hit-out and his main work for the week will be in the morning," Snowden said.

On Monday connections of Lee Freedman-trained Atomic paid the $55,000 late entry fee for the colt to contest the Blue Diamond while the stable remains undecided about Masthead running.

A son of Commands, Atomic is third favourite at $10 after an impressive winning debut in the Chairman's Stakes (1000m) at Sandown 12 days ago.

Freedman wants to run Masthead in the VRC Sires Produce Stakes (1400m) at Flemington on March 12 and needs to be convinced the Blue Diamond is the right path to that target.

The Peter Moody stable is hoping to have two Blue Diamond runners despite Hallowell Belle and Metonymy being 20th and 21st in the order of entry.

Of the top 20 qualifiers, Pane In the Glass, Satin Shoes, Masthead, Glissade, Helmet, Eramor, Redangelo, Bossdon City and Motifs are either out or unlikely runners.

Meanwhile, the Robbie Laing-trained filly Spectrolite is back on track for the Blue Diamond after a pleasing third in a Cranbourne barrier trial on Monday.

Spectrolite, 10th in order of entry, missed the fillies Prelude because of an elevated temperature and is $101 for the Diamond while stablemate Grand Britannia (ninth) is $35.

The Blue Diamond field of 16 will be declared at 9am on Tuesday with the barrier draw held soon after.