The Brumbies centre Stirling Mortlock has been ruled out of his side's Super 14 clash with the Blues in Auckland on Friday night
Mortlock had been cleared to play this week after a neck and shoulder injury saw him fail to return to the field after halftime in the Brumbies' win over the Sharks last Saturday.
However, the Wallabies centre will now be rested this weekend as a precautionary measure.
Tyrone Smith will take Mortlock's place outside Christian Lealiifano.
