Waratahs second five-eighth Berrick Barnes has ruled himself out of the rest of the Super 15 season

The Wallabies star announced the decision today after suffering his second concussion of the year against the Highlanders on Saturday.

The 25 year old has been suffering from migraines and after consulting with a neurosurgeon decided to sit out the remainder of the Super 15.

The Waratahs currently sit one point outside the Super 15 play-offs, meaning their local derby against the Brumbies is a must win situation.

Waratahs host the Brumbies on Saturday at 7.35pm.

Story by: Dreu Vukailagi