Is there a draw bias at Haydock?
Yes, in places. Across 411 races from 2023-06-01 to 2026-06-09: over 5-6f — strong: low (inside) favoured (iv 1.22); over 7-8f — moderate: low (inside) favoured (iv 1.24); over 9-12f — moderate: low (inside) favoured (iv 1.20). Check the A/E column before betting it: a bias the market already prices in is not an edge.