I honestly don't think Colly has been THAT bad - after 4 test matches he's only had 5 knocks, as he only batted once at Brisbane, Adelaide and Melbourne. He was going ok in Adelaide and got 40 odd, and was in good nick in the warm up games. I think though, as mentioned previously, the perfect scenario would be for him to hit a match winning ton in Sydney, England win the series 3-1 and he announces his retirement from the test side going out on a high.