SYDNEY – They've got the bunting up in time for Opening Day as usual. The red-white-and-blue cloth, in this case, is decked out along the railings of a building that was almost 50 years old the day Wrigley Field opened its gates."This is sacred ground," says Scott Egelton, the director of the Sydney Cricket Ground.It might be sacred, but some of it is now foul ground -- and there's a lot of it. Major League Baseball, for the next week, is taking over the most historic sporting venue in Australia.