The NASCAR Throwback Weekend at Darlington was entertaining. All three national series races gave fans something different. The big story from the weekend is the fact that Brad Keselowski is once again a race-winner in the Cup Series. The weekend got started with the Craftsman Truck Series. A chaotic race both because it is the Truck Series and because The Lady in Black is so difficult to handle. In the Xfinity Series, we had a dominating performance but an otherwise good race. For the second week in a row in the Cup Series, Chris Buescher was on the wrong end of things at the end of the race….