Four years into her riding career, Aileen O'Sullivan is still searching for her first winner. Across 12 races in the past 12 months — and 12 races this season — she has yet to get off the mark, which makes for tough reading on paper. But careers are rarely told by one number alone, and O'Sullivan is still a young rider building her craft.Based on TrackLab's analysis
A snapshot of this jockey's performance over the last 12 months
12
Races
0
Wins
0%
Win rate
avg ~10%
0%
Top-3 rate
avg ~30%
🔍 Full analysis
Our model's view, based on this jockey's record and recent runs
TrackLab's jockey breakdown
The most intriguing detail in her record is the partnership with Arctic Craft. One win from three races together is a genuine bright spot — winning 1 in 3 races with a single horse is a strong return by any measure, and it hints that when horse and rider click, O'Sullivan can get the job done. That kind of chemistry matters in racing, and it is worth keeping an eye on wherever those two line up together.
Her most frequent working relationship is with trainer S Michael Millar's yard, where she has had 11 rides without a winner. That volume of rides from one trainer shows there is real trust on both sides — trainers do not keep putting a jockey up if they have lost faith — but converting that opportunity into winners is the next step O'Sullivan needs to take. She has the rides. She now needs the results to follow.
📈 Form trend
How this jockey's win rate has changed month by month
Monthly win rate
2024–2025
25%
Jun
0%
Jul
0%
Aug
100%
Oct
0%
Jan
0%
Feb
0%
Apr
0%
Jul
0%
Aug
0%
Sep
0%
Oct
0%
Nov
🎯 Where this jockey does best
Results split by ground, race level and track shape
🌧 Ground
Good (a little give)
Unknown
Yielding (slightly soft)
Unknown
Soft (muddy)
Unknown
Good to yielding (mild give)
Unknown
Soft to heavy (wet)
Unknown
Yielding to soft (damp)
Unknown
Standard (all-weather)
Unknown
🏟 Track shape
Right-handed, long straights
Unknown
Left-handed, long straights
Unknown
Right-handed, tight turns
Unknown
Left-handed, tight turns
Unknown
🏇 Trainers
The trainers they work with most, most rides first