ORANGE CYMS’ defence of their Group 10 title might have taken a major hit after their star player Michael Sullivan injured his shoulder in the trial match against Canterbury-Bankstown Bulldogs under 20s on Saturday.

The premiership-winning captain-coach injured his AC joint in his left shoulder after an attempted shoulder charge went horribly wrong.

Sullivan attempted to recreate one of former Bulldogs’ Sonny Bill Williams’ bone rattlers, but came off second best.

Last season’s Group 10 Player of the Year immediately hit the ground, clutching his shoulder.

He walked off the field with a worried look on his face and did not return to the paddock.

“It’s never the smartest thing to do (attempting a shoulder charge),” Sullivan said.

The former NRL rake drove to Sydney yesterday to visit Bulldogs physiotherapist Tony Ayoub.

Sullivan played two seasons for the blue and whites from 2008.

He said the visit to Sydney would give him a better idea of how much damage he has done.

“I’m not sure,” he said.

“I don’t know if I have done damage to the muscles or ligaments.”

However, Sullivan was confident he would be back for the opening game of the Group 10 season against Orange Hawks on May 7.

“I’ll be back for round one. I might miss the pre-season competition [Skilled Challenge].

“That’s a shame because I was really looking forward to playing [Group 11 premiers] Parkes.”

Sullivan joins Hawks captain-coach Todd Barrow on the sidelines.

Barrow injured his right ankle after falling off scaffolding at work last week.

He could be out for at least six weeks.

It’s very likely the two Orange clubs will be without their generals for the Skilled Challenge.

l Orange CYMS have drawn Group 20 club Yenda in the opening round of the West Wyalong pre-season knockout next Friday.

CYMs and Yenda clash at 8.50pm, while Orange Hawks will meet another Group 10 club Yanco Wamoon at 9.25pm.