WESTERN Bulldogs midfielder Lin Jong has been placed on report for rough conduct on Greater Western Sydney defender Matt Buntine during the first quarter of Sunday's clash.

Buntine had his head over the ball and Jong came in and collected the Giant with a bump to the head.

The defender appeared to be concussed as he lay on the ground with trainers attending to him.

After several minutes he was able to get to his feet and run off the ground.

But late in the first term, the Giants confirmed he would take no further part in the match.

The Giants also lost another defender with Tim Mohr appearing to strain his hamstring during the first term.

Mohr came off the ground after coming off second best in a contest for the footy with Jordan Roughead and the club later confirmed he was also done for the day.