Three years into the training game, D Summersby is still in the early stages of building a yard, and the numbers reflect exactly that. This season tells the same story as the last twelve months: 3 winners from 36 runners, which works out at roughly 1 in every 12 races — an 8% win rate that puts Summersby firmly in the category of a trainer who is learning the craft rather than dominating it. That is not a criticism; most trainers spend years in this territory before things click.Based on TrackLab's AI analysis
TrackLab's AI-generated assessment based on career data and recent form
TrackLab's Trainer Breakdown
Auto-Generated
The one consistent bright spot is the partnership with jockey Bryan Carver, who has been aboard for 27 of those 36 runners and has provided all 3 winners. That means when Carver is in the saddle for a Summersby horse, the win rate nudges up to 11% — closer to 1 in every 9 races — which suggests the two have developed a decent working understanding. In a small yard still finding its feet, having a reliable jockey who knows how the horses are being prepared makes a real difference.
Less encouraging is the record with Man Oh Man, the yard's most notable horse on paper. Four races together, zero wins — a frustrating sequence that will be on Summersby's mind every time that horse heads to the track. Whether the issue is timing, race selection, or simply a horse that has not quite found its moment yet, only time will tell. With just three years of training behind them, Summersby is still very much a work in progress — and in this sport, that is entirely normal.
📈 Form Trend
How this trainer's win rate has changed month by month
Monthly win rate
2024–2026
0%
Dec
0%
Mar
0%
Apr
25%
Jun
25%
Jul
0%
Aug
0%
Sep
25%
Oct
0%
Nov
0%
Dec
0%
Jan
0%
Feb
🎯 Where This Trainer Thrives
Performance broken down by ground, class, and track type
🌧 Ground Conditions
Good (firm-ish)
Likes
Good to soft (some give)
Likes
Heavy (very wet)
Unknown
Good to firm (drying out)
Unknown
Soft (muddy)
Unknown
🏅 Competition Level
Class 3 (mid-level)
Unknown
Class 4 (standard)
Ok
Class 5 (entry-level)
Ok
🏟 Track Shape
Left-handed, tight
Loves
Left-handed, tight turns
Likes
Left-handed, long straights
Ok
Right-handed, hilly
Avoids
🏇 Jockey Partnerships
The riders they work with most, sorted by rides together