Hurricane Run
In the 2004 World Thoroughbred Racehorse Rankings, Grey Swallow was given a rating of 123, seven pounds the leader Ghostzapper, making him the ninth best racehorse in the world. In the following year, he was rated 122, making him the twentieth-best racehorse in the world, eight pounds behind the top-rated Hurricane Run. In 2006, his rating dropped to 119 and he was rated forty-fourth in the world.