Ban 894, in answer to your query:
Fav or Joint Favs not previously a 7F distance winner: – all flat races: 480/1585, 30.3% SR with a 100.3% return at SP
Fav or joint favs previously a 7F distance winner:- all flat races: 882/3138, 28.10% SR with a 91.9% return at SP.
Fav/Joint fav 7F distance winner with last race 1-3 furlong longer: 187/720 26.0% SR with a 89.9% return at SP.
Interestingly as a specialist distance these trainers excel: A O Brien, Gosden, Haggas, Varian, C. Appleby, Bin Suroor all having achieved a 20% SR the past 5 years. In fact back everyone of Varians 7F runners during the months of June, July, August and Sept and you’d show a 40% + ROI on investment at SP from 230 contenders at a SR of 27%.