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Jockey profile

Alexis Acker

626 rides in the lifetime window · 242 individual horses
As at 28 Oct 2026 · KTB archive: 2005–present, updated daily
Last ride Sep 2018 100% of rides over jumps
No rides in the last 5 seasons — showing the lifetime record, from 1 Jan 2008 — the aggregate floor: every horse in the window has a complete captured career behind it.
54–626
Wins / Runs
8.6%
Strike rate
n=626
153 (24%)
Placed
0.90
n=584 · 0.83 incl. margin
−235.20
£1 level stake
n=606 at SP · −38.8%
£2.94m
Prize money (window)
Strike by season
5.4%
KTB Rider Profile

Rode around 60 times a season, almost all over hurdles and fences, winning on 9% of them — a touch below the margin-free market read across the lifetime window (Fair A/E 0.90). Riding last-time-out winners the record reads 18% (66 rides). Rode mostly for M Rolland — 58% of rides in the window.

Deterministic profile computed from 626 archived runs (lifetime window) · updated 28 Oct 2026
KTB at a glance Fired Oct–Nov 34.8% when favourite M Rolland: 10.8% from 362 LTO winners: 18.2% Rode the favourite in 7% of races
The read

Rides on last-time-out winners have been a positive signal at 18.2% (n=66, Fair A/E 0.85), but rides in big fields of 14 or more have been a poor signal at 3.9% (n=228, Fair A/E 0.76). The market has consistently overbet first rides on a horse: 4.2% strike, Fair A/E 0.38 and −148.10 to a £1 stake over 240 rides — those runners underperformed what the price implied. M Rolland supplied 58% of the rides and edges the rider's average (10.8% vs 8.6%, A/E 0.96). The rider also read well off a 31-60-day break (13.3%, n=75). The record read poorly off a 8-14-day break — 2.2% over 45 rides, 6.4pts below the baseline. 9 Group and Graded wins sit in the archive record — the biggest prize the rider has landed: the Prix Renaud du Vivier at Auteuil (FR) (Nov 2009, £117,961). The standout partner of the record was Grand Charly (FR) — 5 wins from 25 rides together. Seasonally, the rider fired Oct–Nov.

Written from the figures on this page — every claim carries its sample. Descriptive, not a tip.

Riding patterns

the angles behind the record · vs 8.6% baseline
First ride on the horse · first captured pairing
4.2%−4.4
n=240 · A/E 0.38 · £1 −148.10
Last-time-out winners · previous run was a win
18.2%+9.6
n=66 · A/E 0.85 · £1 −26.50
Fresh horses · 61+ days off
8.1%−0.5
n=197 · A/E 0.85 · £1 −89.20
When favourite
34.8%
n=46 · A/E 1.00 · £1 −0.90
Claiming rides · riding with a claim
42.9%+34.3
n=7 · A/E 0.00 · £1 +2.20
Big fields · 14+ runners
3.9%−4.7
n=228 · A/E 0.76 · £1 −108.20
Group / Graded races · pattern & listed
5.7%−2.9
n=157 · A/E 0.49 · £1 −95.10

Each tile is the record in that situation vs the 8.6% baseline — descriptive splits with the sample always shown, not tips. Tiles under 30 runs render muted. First rides are the first captured pairing of horse and rider; last-time-out winners are horses whose previous captured run was a win; claiming rides are runs where the rider carried a weight claim. Group / Graded covers pattern and listed races.

Notable angles

vs their own baseline
On last-time-out winners 18.2% vs 8.6% · n=66
With C&D winners 16.9% vs 8.6% · n=124
Off a 8-14-day break 2.2% vs 8.6% · n=45
On first rides for the horse 4.2% vs 8.6% · n=240
With debutants 3.6% vs 8.6% · n=84
Off a 31-60-day break 13.3% vs 8.6% · n=75
Descriptive splits ranked by divergence × sample — insight, not instruction. Every angle carries its N; nothing under 30 runs qualifies. Rows within 2pts of the baseline appear only when the market-relative read (Fair A/E) diverges, and show it.

Record by conditions

same window as header

Race type

TypeRWSR£1
Hurdle 381 31 8.1% −125.90
Chase 244 23 9.4% −108.30
Flat 1 0 0% −1.00

Going

GoingRWSR£1
Soft 429 33 7.7% −188.70
Heavy 190 20 10.5% −54.50
Good to Soft 5 1 20% +9.00
Good 2 0 0% −1.00

Courses

CourseRWSR£1
Auteuil (FR) 432 39 9% −136.00
Enghien (FR) 135 9 6.7% −85.10
Compiegne 31 3 9.7% −19.60
Cagnes-Sur-Mer 8 2 25% +16.00
Clairefontaine 8 0 0% −6.00
Fontainebleau 3 1 33.3% +0.50
Dieppe 1 0 0% −1.00
Lyon Parilly 1 0 0% —
Strasbourg 1 0 0% −1.00
Cluny 1 0 0% —
Angers 1 0 0% −1.00
Nantes 1 0 0% −1.00
Vittel 1 0 0% —
Leicester 1 0 0% −1.00
Argentan 1 0 0% —

Class

ClassRWSR£1
Class 1 157 9 5.7% −95.10
Class 3 1 0 0% −1.00

Market position

In the bettingRWSRA/E£1
Favourite 48 16 33.3% 0.97 −2.90
2nd–3rd fav 89 14 15.7% 0.85 −7.30
4th–6th fav 168 12 7.1% 0.96 −40.00
7th+ in betting 301 7 2.3% 0.80 −185.00
Fair A/E per band is the tell: near 1.00 the market had it priced right; well above, the wins came where the market didn't expect them.

Rows below n=30 are shown faded — a small sample is a fact, not a trend. Every figure carries its N.

Jumping record

completion over obstacles · same window as header
77.4% completed · 625 obstacle rides (chases & hurdles)
CodeRCompFURPUBDOth
Chase 244 80.3% 14 1 28 0 5
Hurdle 381 75.6% 17 0 61 0 15
Chases and hurdles only — bumpers have no obstacles, so completion is not a question there. F fell · UR unseated rider · PU pulled up · BD brought down · Oth covers refusals, slip-ups, run-outs and the rare disqualification. Non-runners are excluded throughout. Rows under n=30 are shown faded. A descriptive record, not a tip.

Horses ridden

same window as header · most-raced first
HorseRWPlLast ran
Grand Charly (FR) 25 5 9 18 May 14
Bandit D'Ainay (FR) 21 2 7 6 Sep 18
Libaute (FR) 14 1 4 19 Nov 14
Bestarabad (FR) 11 2 7 26 Mar 17
Prince Picard (FR) 11 1 3 23 Mar 14
Cigalon Park (FR) 10 0 1 16 May 15
Aladin Du Chenet (FR) 9 3 5 2 Mar 15
A Pigalle (FR) 9 0 2 16 Jun 14
Figari Gaugain (FR) 9 3 6 9 Jun 13
Tonnins (FR) 9 2 3 10 Apr 13
Tell Me Now (FR) 9 0 1 22 Apr 12
Positano Sud (FR) 8 0 2 14 Nov 16
Showing the 60 most-raced of the 242 horses ridden in this window — each ran at least 3 times. Horses with fewer runs aren't listed; search finds any horse since 2005. Runs, wins and places only: a strike rate or a return on a handful of runs is noise, so none is quoted per horse — each horse's full record is on its own page.

By month

strike by month, lifetime
JFMAMJJASOND
02558490139111321
A jumps rider: the season runs Oct–Apr. Muted months are small samples (under 30 runs) — read them with the caution they deserve.

Riding for

same window · biggest samples first
Main yardM Rolland
58% of all rides
10.8% SR · A/E 0.96
TrainerRWSR£1
M Rolland 362 39 10.8% −111.10
T Civel 102 6 5.9% −70.70
F-M Cottin 52 4 7.7% +8.30
Muted rows are under 30 rides and sit behind "Show all".

Career highlights

lifetime archive, 2005→
60
Archived wins
9
Pattern / graded wins
£3.06m
Prize money
2014
Best season · 10 wins
In our archive from its very first year (2005), so this career almost certainly began earlier than our record does. The figures above count 2005 onwards only — what the archive holds, not a full-career total. This card is the full archive census (2005→); the statistics in the header aggregate from 2008 — the floor that guarantees every horse a complete captured career — so this card can legitimately show more wins than the header.
Rock Noir (FR) — Prix Renaud du Vivier (Grande Course de Haies des 4ans) (Hurdle) Auteuil (FR) · Nov 2009 · Grade 1
£117,961
Full Jack (FR) — Prix Du President De La Republique (Chase) Handicap) (5yo+) (Turf) Auteuil (FR) · Apr 2013 · Grade 3
£82,317
Rock Noir (FR) — Prix Pierre de Lassus (Hurdle) Auteuil (FR) · Oct 2009 · Grade 3
£56,796

Sires of the horses ridden

progeny record · win % by ground and trip
Poliglote (GB) 20.6% · 7–34
Progeny have won 15.6% of 4,224 runs since 2008 (417 horses). Weakest on Standard (AW) going: 6.8% from 234. Strongest over 1m5f – 2m (all codes): 19% from 691. Weakest over 1m – 1m1f (all codes): 6.1% from 196.
Le Triton (USA) 15.2% · 5–33
Progeny have won 9.4% of 384 runs since 2008 (58 horses).
Martaline (GB) 3.6% · 1–28
Progeny have won 14.2% of 7,345 runs since 2008 (723 horses). Weakest on Standard (AW) going: 9.4% from 128. Weakest over 1m – 1m1f (all codes): 10% from 120.
Astarabad (USA) 13.6% · 3–22
Progeny have won 13.2% of 1,601 runs since 2008 (162 horses). Strongest on Heavy going: 18.3% from 377.
Crossharbour (GB) 9.5% · 2–21
Progeny have won 11.3% of 293 runs since 2008 (36 horses). Strongest on Soft going: 15.3% from 137. Strongest over 2m1f – 2m4f (all codes): 14.5% from 124.
Discover D'Auteuil (FR) 0% · 0–19
Progeny have won 10.2% of 954 runs since 2008 (87 horses). Strongest on Good to Soft going: 18.4% from 103. Weakest on Soft going: 7.1% from 408. Strongest over 1m5f – 2m (all codes): 13.3% from 195.
Top line: the rider's own record with each sire's runners (win %, wins–runs), same window as the header; faded under 30 runs. Beneath it: every run by that sire's progeny in our archive since 2008, as at 28 Oct 2026 — what they have done, not a forecast. A going or a distance is named only where at least 100 progeny runs sit 3 or more points from the sire's own win rate. Distance bands cover Flat and jumps together.

The record

latest 50 of 652 · newest first

The latest 50 of 652 archived rides, newest first. The full record runs from 13 March 2005 to 24 September 2018.

DateCourseHorseRaceFinishSP

Drawn from the whole archive (2005 onwards), so it can include runs outside the window the header statistics cover. Non-runners are not listed. A finish shown in letters is a non-completion (F fell · UR unseated · PU pulled up · BD brought down).

Quick answers

What is Alexis Acker's strike rate?
Alexis Acker has won 54 of 626 rides since 2008, a strike rate of 8.6% (as at 28 October 2026). Figures are computed from our own results archive.
Which course does Alexis Acker do best at?
Compiegne by strike rate: 3 wins from 31 rides (9.7%) since 2008. Read from the 15 courses with the most rides on the same basis, and only those with at least 30 — a small sample cannot top the list, and a rarely-visited course is not in the comparison.
Which yard does Alexis Acker ride most for?
M Rolland, with 362 rides since 2008 — 58% of the total. That pairing has won 39 (10.8%).
What is Alexis Acker's Fair A/E?
0.90, from 584 rides with a computed fair probability since 2008. Fair A/E compares actual wins with a margin-stripped market expectation, so 1.00 is par: above it the wins came at bigger prices than the margin-free market implied, below it they did not.
Fair A/E compares wins with a margin-stripped market expectation. Favourite-heavy samples — top yards, leading riders — naturally read a few points warm, so 1.05 means "beat the margin-free market read", not "the market underrates this by 5%". Three sample sizes are reported and never blended: runs (n), the ROI basis (n at SP), and the fair-A/E basis (n with a computed fair probability).

Strike rate is wins over all runs (n). ROI is £1 level stakes at SP over runs with a parseable price (n at SP). Fair A/E is wins over margin-stripped market expectation, over runs with a computed fair probability (n fair). The three Ns can legitimately differ and are always shown. Figures as at 28 October 2026, computed from our own results archive (2005 onwards; aggregates from 2008).