If these figures are right on Cricinfo, then Brett Lee took 1/13 from his 4 overs this morning against Zimbabwe. His main competition for that 4th bowling spot, not so good: Dan Christian bowled 2 overs 0/29 and Hauritz 2 overs 0/24. Advantage Lee!
It'll be interesting to see what Australia run with. Will they even play 4 specialist bowlers? Or will Smith be stuffed down at #8? If so then it's Mike Hussey v Dan Christian for that extra middle order spot. And Lee and Hauritz will find it hard to beat out Johnson, Nannes and Tait for the 3 specialist bowler spots.
If they go for the extra bowler (yes - please play the extra bowler!!) , then it's Lee v Hauritz v Christian for the bowling spot. I dunno about Christian - he hasn't filled me with much confidence so far. He's got a very hittable look about his bowling aka Peter Siddle when he's flat.