Market preview: The Dow Mini pokes its head very slightly above the parapet for a short while before retreating a bit, while S&P and Nasdaq futures are more solidly lower at -0.15% and -0.2% respectively. Disappointing Chinese data at the weekend, an Italian downgrade and weakness in Europe are all contributing to the less jubilant mood this week. Dick's Sporting Goods (-8.2%) is taking a pounding following its earnings.