Egan also partnered Cherry Tortoni who went through his two-year-old year unbeaten before returning in the spring with solid form.
"This bloke is possibly a little slower to develop than he was but that win probably peaked like one of Cherry's wins as well," Egan said.
"He'll go a mile, but I couldn't say if he'll be going to a Derby or anything.
"Paddy did the same with Cherry and he only had a short break before the spring.
"He's in the right hands. If anyone can do it (get him to the spring), he can."
The Payne brother and sister training team combined with Egan to score with Stop The Rock in the Ken Cox Handicap (2000m).
Stop The Rock has won three of his four starts to date, while the training team also supplied third placegetter Verona Rupes.
Michelle Payne said provided the pair along with sixth placed Frontline Action pull up well, the trio could return for the Mahogany Challenge Series Final (2500m) at Flemington on July 5.