At Haydock it is felt that the stand side part of the straight is the quickest part of the course, and therefore it is perhaps not surprising that over the straight 6 furlongs those drawn high and therefore nearest the stand side have a significant advantage.
A very surprising result here. It seems to be a big advantage to be drawn high, and over a quarter of the races have been won by the horse drawn widest of all. This is the complete opposite to the 7 furlong analysis. Very strange?
There doesn't appear to be any bias here, with high producing slightly more winners, but I think that this is down to the small sample size more than anything else.
It is thought that low numbers are favoured over seven furlongs at Goodwood as those drawn low are on the inside round the bend, however the stats seem to suggest that no actual bias exists with a pretty even spread. My view is that the long straight which is over half a mile negates any advantage of being on the inside around the turn.