Fifteen rides into his career and still waiting for that first winner — Mr J Costello is a jockey at the very beginning of his journey. Racing since 2023, he has spent two years learning the craft, and the numbers so far are modest: no wins from 15 races across his career to date.Based on TrackLab's analysis
A snapshot of this jockey's performance over the last 12 months
15
Races
0
Wins
0%
Win rate
avg ~10%
20%
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 bulk of his experience has come through a steady partnership with trainer A J Martin, who has put him up 14 times. That kind of repeated trust from a yard matters more than it might seem — trainers don't keep booking a jockey out of charity, and 14 rides together suggests Martin sees something worth developing. The wins haven't arrived yet, but the opportunity to keep riding is how jockeys improve.
Every successful rider in the sport went through a stage exactly like this. The first winner, when it comes, tends to arrive without warning — and at that point, two years of groundwork suddenly starts to look like preparation rather than struggle.
📈 Form trend
How this jockey's win rate has changed month by month
Monthly win rate
2024–2026
0%
Oct
0%
Dec
0%
Mar
0%
Apr
0%
Jun
0%
Jul
0%
Aug
0%
Sep
0%
Oct
0%
Nov
0%
Dec
0%
Jan
🎯 Where this jockey does best
Results split by ground, race level and track shape
🌧 Ground
Yielding (slightly soft)
Unknown
Good (a little give)
Unknown
Heavy (very wet)
Unknown
Soft (muddy)
Unknown
Good to yielding (mild give)
Unknown
Soft to heavy (wet)
Unknown
🏟 Track shape
Right-handed, long straights
Unknown
Left-handed, tight turns
Unknown
Right-handed, hilly
Unknown
Right-handed, tight turns
Unknown
Left-handed, long straights
Unknown
Right-handed, tight
Unknown
🏇 Trainers
The trainers they work with most, most rides first