Complex sentence: Lord usually competed in weight for age contests and all but one of his 28 successes were in Melbourne, 21 of them at his home track of Caulfield which earned him the nickname "King of Caulfield".
Split into simpler sentences: Lord usually competed in weight for age contests and all but one of his 28 successes were in Melbourne. In another quirk 21 of these were at his home track of Caulfield, and was the acknowledged "King of Caulfield".