Tattersalls Irish Guineas Festival

A bar chart of 9 race meetings ranked by the bookmakers' overround, the margin over a fair book. St Leger Festival 21.4% on an average field of 11.5; Killarney July 23.0% on an average field of 10.6; Irish Derby 23.8% on an average field of 11.8; Epsom Derby 23.9% on an average field of 12.4; Glorious Goodwood 24.8% on an average field of 13.4; Irish Champions Festival 25.3% on an average field of 13.6; Ebor Festival 28.1% on an average field of 15.1; Royal Ascot 29.0% on an average field of 18.2; Galway 30.5% on an average field of 14.6. The dearest charged 43% more than the cheapest, race for race, across 269 races. The average field is shown beside each bar; the dearer meetings tend to run bigger fields, though not in strict order. Data to the end of the newest meeting in the set. Research, not tips.