by Paul Cook - Waratahs head coach Michael Cheika has rung the changes again for today’s crucial game against the Blues as his side look to kick-start their season with victory. Continuing his policy of giving everyone a fair crack of the whip and a chance to prove themselves, he has tinkered with the back line once more as he tries to find the best formula available in order to execute the brand of footy he is trying to implement at Moore Park. Injury forces Berrick Barnes out of the picture and his spot goes to Rob Horne, who will be shifting in one position from his accustomed outside centre role. Drew Mitchell returns after his one week sabbatical of 're-evaluation' and he will be sure to have a point to prove. His inclusion moves one of last week’s stand-outs in the loss to the Cheetahs, Peter Betham, to the other