Essendon team manager, David Calthorpe, today said that promising on-baller, Ricky Dyson, will miss the next three weeks after having an operation for acute appendicitis.

""Ricky was experiencing stomach pain early Saturday afternoon before the game so he notified the coach and team doctor and was assessed,"" Calthorpe said.

""He was tender in the stomach and we ruled him out of the game at about 5pm.

""Then, early in the first quarter it became clear he was in a bit of discomfort and one of our staff took him to hospital and he was operated on at 10pm that night for acute appendicitis.

""It's actually our second case of appendicitis in the past few weeks with Dean Dick also being operated on recently.

""In Ricky's case it was a fair more aggressive form and he will miss three weeks compared to Dean who had to miss two weeks.""

Calthorpe said both players are recovering well.