Reasoning (USA)
Reasoning is a lightly raced filly by Justify out of a Nathaniel mare. Justify’s progeny in the archive have recorded 92 wins from 519 runs since Jan 2008 with a strongest strike rate at 6f-7f. She made her only start at Chelmsford City over 1m2f-1m4f on standard going in Mar 2025, where she was held and finished 7 of 8 in a Class 5 maiden. That was her sole run to date.
- 0–1Wins / Runs
- 0%Strike rate
- 0 (0%)Placed
- −1.00£1 level staken=1 at SP
KTB Speed and Rating
Best recent Speed —
How fast the horse ran, as points against the day-corrected standard time for its course and distance: 100 is the median GB Class 4 handicap winner on that code; one point is 0.1% of the standard time. A, B or C is how much the day's card could tell us, not how good the run was. What this means →
KTB Speed v1 · batch 15 Sep 2026 · GB & Irish racing only · 1 figure from 1 run · as at 3 Oct 2026 · a record, not a forecast
Both figures are KTB's own, computed from the archive; no vendor rating enters either. Every run's figure is on its form line below with its grade. Grades measure how much the archive could see, never the merit of the run.
Pedigree intelligence
Progeny in our archive have won 17.9% of 526 runs since Jan 2008 (98 horses).
Strongest over 6f – 7f (all codes): 23.5% from 149. Weakest over 1m – 1m1f (all codes): 13.6% from 162.
| Going | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Firm | 1 | 0 | 0% | −17.9 | — |
| Good to Firm | 75 | 15 | 20% | +2.1 | — |
| Good | 167 | 30 | 18% | +0.1 | — |
| Good to Soft | 57 | 9 | 15.8% | −2.1 | — |
| Soft | 73 | 17 | 23.3% | +5.4 | — |
| Heavy | 26 | 3 | 11.5% | −6.4 | — |
| Standard (AW) | 127 | 20 | 15.7% | −2.2 | 0 from 1 |
| Distance (all codes) | Runs | Wins | SR | vs sire | This horse |
|---|---|---|---|---|---|
| Under 6f | 3 | 2 | 66.7% | +48.8 | — |
| 6f – 7f | 149 | 35 | 23.5% | +5.6 | — |
| 1m – 1m1f | 162 | 22 | 13.6% | −4.3 | — |
| 1m2f – 1m4f | 174 | 26 | 14.9% | −3 | 0 from 1 |
| 1m5f – 2m | 34 | 8 | 23.5% | +5.6 | — |
| 2m1f – 2m4f | 4 | 1 | 25% | +7.1 | — |
Flat and jumps together (all codes) · since Jan 2008 · as at 28 Oct 2026 · rows under 30 runs muted · win % is the measure, a record not a forecast
No other produce in our archive. It holds racing in Great Britain, Ireland and France from 2005, so siblings racing elsewhere won’t appear here.
Too few runs for meaningful splits. The full record is below.
Form
| Date | Course | Race | Pos | Btn | Wgt | Spd | KTB | Jockey | SP |
|---|---|---|---|---|---|---|---|---|---|
| 2025 · 1 run | |||||||||
| 08 Mar 25 | Chelmsford City (AW) | Bet Boost At bet365 Maiden Stakes (GBB Race) Settled just behind the front group on the rail - driven and lost touch with 2f left - fading and drifted left as the field bent for home - finished well held in 7th | 7/8 | 11 | 9-2 | 60C | 37C | Callum Shepherd | 14/1 |
Quick answers
- How many races has Reasoning won?
- Reasoning (USA) has yet to win, from 1 archived start in 2025.
- Who trained Reasoning?
- Reasoning (USA) was trained by Lemos De Souza on the most recent run on record, at Chelmsford City (AW) on 8 March 2025.
- Who is Reasoning's sire?
- Reasoning (USA) is by Justify (USA) out of Sladina (GB), whose sire is Nathaniel.
- What is Reasoning's sire's record?
- Justify (USA)'s progeny in our archive have won 17.9% of 526 runs since Jan 2008 (98 horses), Flat and jumps together. Strongest over 6f – 7f (all codes): 23.5% from 149. Weakest over 1m – 1m1f (all codes): 13.6% from 162.