Group One winner Doctor Doom will be eased back into racing with trainer Guy Walter adopting his usual cautious approach.

The four-year-old will make his first public appearance in a Warwick Farm barrier trial on Tuesday after a 10-month break.

The winner of the 2011 Spring Champion Stakes, Doctor Doom was found to have bone chips in a knee after a lackustre 2012 autumn campaign which ended after his unplaced run in the Rosehill Guineas.

Walter said he recovered quickly from the operation to remove the bone chips and the long spell was not because of the injury but more to help him mature.

"He had a good spell and has come back well," Walter said.

"I'll give him two trials before we think about racing him again.

"He will be nominated for the Doncaster but whether he gets that far remains to be seen.

"He will start out in the lowest grade possible to build his confidence."

The Walter-trained two-year-old Supreme will have her first barrier experience when she runs in an 800m heat at the Warwick Farm trials.

The trainer is not noted for producing many early running two-year-olds but Supreme could be the exception.

She is a half sister to Excites who gave Walter his only juvenile Group One success in the 2006 AJC Sires' Produce Stakes and is raced by her breeders Peter and Wendy Moran.

The same day Doctor Doom won the Spring Champion, stablemate Streama romped away with the Group One Flight Stakes.

She won the Oaks in the autumn but failed in her spring Group One mission, the Myer Classic won by her stablemate Appearance.

Both mares are close to their returns and will also be among the Doncaster entries.

"Streama and Appearance will both trial at Warwick Farm on February 1st," Walter said.

The pair are likely to cross paths on the track with the Coolmore Classic, Queen Of The Turf and possibly the Doncaster on their agendas.