The most telling number in his profile is the ground. On normal conditions, Mammies Boy has won 3 of just 9 races — that's a 33% win rate, which is genuinely impressive. To put that in perspective, most racehorses win roughly 1 in 10 races over a career. When the ground is right for him, he's a different animal. His most recent win came at Warwick in May 2025, and he's been out racing as recently as yesterday, so he's firmly in the thick of an active campaign.
The partnership with jockey Jonjo O'Neill Jr is the main relationship to watch, though the numbers there are more modest — 1 win from 8 races together, roughly 1 in every 8 rides. O'Neill Jr is a polished, experienced jockey and the combination works often enough to keep them paired up, but this isn't a horse-jockey duo that's setting the world alight. His trainer, Nick Scholfield, is based at the well-known Lambourn yard in Berkshire and has sent out 19 winners this season — a decent tally that speaks to a yard in solid form.
Mammies Boy tends to compete at Class 4 level — the mid-tier of British racing, a step or two below the biggest occasions. He's won 1 of his 7 races at that level, or roughly 1 in 7, which is about what you'd expect for a reliable but not dominant competitor at that grade. He's not a horse you'd expect to see upsetting the big guns in a top-level race, but he's honest, he turns up, and on the right day with the ground in his favour, he gets the job done. His first career win came at Taunton in February 2024, and there's been at least one more chapter since. At eight, he's in the prime years of a jumping career, and with normal ground on offer, he's always worth keeping an eye on.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| Taunton Undulating |
3 | 1 win, 1 second, 1 other | 24 Mar | 33.3% |
| Warwick Sharp |
2 | 1 win, 1 other | 10 May | 50% |
| hereford | 2 | 2 other | 29 Nov | 0% |
| Huntingdon Galloping |
1 | 1 win | 9 May | 100% |
| Southwell Galloping |
1 | 1 third | 29 Jan | 0% |
| Chepstow Galloping |
1 | 1 other | 31 Oct | 0% |
| Exeter Undulating |
1 | 1 third | 17 Apr | 0% |
| Wincanton Galloping |
1 | 1 other | 25 Feb | 0% |
| Fontwell Park Tight |
1 | 1 other | 8 Apr | 0% |
| Market Rasen Sharp |
1 | 1 other | 31 Mar | 0% |
| Kempton Park Galloping |
1 | 1 other | 13 Nov | 0% |