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Curragh draw bias

Yes, in places. Across 544 races from 2023-06-01 to 2026-06-09: over 5-6f — moderate: high (outside) favoured (iv 1.12); over 9-12f — moderate: middle favoured (iv 1.13). 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 · 544 races · updated 9 June 2026

5-6f · 182 races

Moderate: high (outside) favoured (IV 1.12)
5-6f · 182 races · field avg win 7.3%
Moderate: high (outside) favoured (IV 1.12)
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
7.5%
67 wins
12.6%
1.03
vs course avg
1.12
vs market
58.1%895
Middle
6.1%
47 wins
10.3%
0.84
vs course avg
1.05
vs market
56.2%776
High (outside)
8.1%
68 wins
15.1%
1.12
vs course avg
0.85
vs market
61.5%839

7-8f · 211 races

No meaningful draw bias
7-8f · 211 races · field avg win 6.5%
No meaningful draw bias
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
6.3%
72 wins
12%
0.96
vs course avg
0.92
vs market
59.3%1142
Middle
6.5%
65 wins
11.5%
0.99
vs course avg
0.92
vs market
55.9%999
High (outside)
6.8%
74 wins
11.2%
1.04
vs course avg
1.15
vs market
57.7%1082

9-12f · 126 races

Moderate: middle favoured (IV 1.13)
9-12f · 126 races · field avg win 7.5%
Moderate: middle favoured (IV 1.13)
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
8.2%
49 wins
15.9%
1.10
vs course avg
1.10
vs market
63.5%597
Middle
8.5%
44 wins
11.7%
1.13
vs course avg
0.99
vs market
57.2%520
High (outside)
5.8%
33 wins
12.3%
0.78
vs course avg
0.88
vs market
55.8%568

13f+ · 25 races

Sample too small to call
13f+ · 25 races · field avg win 5.6%
Sample too small to call
DrawWin %Top-3 %IVA/EPRBRuns
Low (inside)
6.5%
10 wins
9.7%
1.14
vs course avg
1.83
vs market
62.4%155
Middle
5.8%
8 wins
10.1%
1.02
vs course avg
0.90
vs market
56.6%139
High (outside)
4.7%
7 wins
9.4%
0.83
vs course avg
0.00
vs market
60.8%149

Common questions

Is there a draw bias at Curragh?

Yes, in places. Across 544 races from 2023-06-01 to 2026-06-09: over 5-6f — moderate: high (outside) favoured (iv 1.12); over 9-12f — moderate: middle favoured (iv 1.13). 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 Curragh draw bias?

Partly. Some favoured bands at Curragh show A/E below 1 (bias over-priced), others do not — the tables below show which is which.

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.