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Haydock draw bias

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.

2023-06-012026-06-09 results · 411 races · updated 9 June 2026

5-6f · 114 races

Strong: low (inside) favoured (IV 1.22)
5-6f · 114 races · field avg win 9.6%
Strong: low (inside) favoured (IV 1.22)
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
11.8%
51 wins
18.7%
1.22
vs course avg
1.27
vs market
60.5%433
Middle
6.8%
24 wins
13.4%
0.71
vs course avg
0.61
vs market
56.8%352
High (outside)
9.8%
39 wins
19.6%
1.02
vs course avg
1.00
vs market
62.3%397

7-8f · 177 races

Moderate: low (inside) favoured (IV 1.24)
7-8f · 177 races · field avg win 10.4%
Moderate: low (inside) favoured (IV 1.24)
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
12.9%
80 wins
22.8%
1.24
vs course avg
1.24
vs market
68%619
Middle
8.2%
42 wins
15.3%
0.79
vs course avg
0.68
vs market
60.8%511
High (outside)
9.6%
54 wins
14.8%
0.93
vs course avg
0.95
vs market
56.8%560

9-12f · 87 races

Moderate: low (inside) favoured (IV 1.20)
9-12f · 87 races · field avg win 10.9%
Moderate: low (inside) favoured (IV 1.20)
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
13.1%
39 wins
22.5%
1.20
vs course avg
1.23
vs market
65.9%298
Middle
9.2%
22 wins
17.2%
0.85
vs course avg
0.85
vs market
59.6%239
High (outside)
9.8%
26 wins
17.8%
0.91
vs course avg
0.73
vs market
58.5%264

13f+ · 33 races

Sample too small to call
13f+ · 33 races · field avg win 10.2%
Sample too small to call
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
11.8%
14 wins
19.3%
1.16
vs course avg
1.38
vs market
58.9%119
Middle
9.6%
9 wins
13.8%
0.94
vs course avg
0.89
vs market
62%94
High (outside)
9%
10 wins
22.5%
0.88
vs course avg
0.67
vs market
63.2%111

Common questions

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.

Does the market already price in the Haydock draw bias?

Not fully. The favoured thirds at Haydock hold A/E at or above 1 in our window — the bias has not been completely priced away, which is where a draw edge can actually pay.

What do IV, A/E and PRB mean?

IV (Impact Value) is the group's win rate versus all runners in the same races — 1.00 is neutral. A/E is actual wins versus what de-overrounded Betfair prices expected — below 1 means the market over-bets that group. PRB is the mean percentage of rivals beaten, a finer-grained placing measure.

Method: stall numbers grouped into field thirds (low/middle/high) per race, so field size never skews the groups; IV against same-course same-band baseline; A/E against de-overrounded Betfair SP. Small samples are flagged rather than hidden. Racing Alpha does not accept bets. 18+ · BeGambleAware.org.