Jonjo O'Neill Sr has been candid about why progress has been gradual: this is a big horse who needed time to grow into himself. After showing promise at Chepstow, he went through a softer patch physically — not through injury, but simply because large horses sometimes take longer to fill their frame and develop the strength to match their size. That kind of patience is a hallmark of how the O'Neill yard operates, and with 51 winners already on the board this season, they clearly know how to get horses ready at the right time.
The most interesting detail here is what comes next. The trainer has flagged hurdles as the direction, and that matters. Plenty of horses find their feet when they switch discipline — the jumping gives them something new to concentrate on, and a big, scopey type often takes to it naturally. Assertive Walk's regular partner in the saddle has been Jonjo O'Neill Jr, who has ridden him in five of his seven races without a win between them, but that familiarity could count for something when the pair eventually step into this new chapter together.
He races at a mid-tier level — Class 4, which sits in the middle of the racing ladder — and has placed twice at that level, meaning he can be competitive without yet finding a way to win. The switch to hurdles, combined with a summer during which his trainer says he has done well physically, sets up an interesting few months ahead. He is not a horse drowning in form figures, but he is a horse whose the yard believe the best is still to come — and given the O'Neill yard's record this season, that is not a view to dismiss lightly.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| Punchestown Galloping |
1 | 1 other | 28 Apr | 0% |
| Chepstow Galloping |
1 | 1 third | 22 Nov | 0% |
| Ludlow Undulating |
1 | 1 third | 18 Feb | 0% |
| Windsor Sharp |
1 | 1 second | 1 Jan | 0% |
| Lingfield Park Sharp |
1 | 1 other | 16 Feb | 0% |
| Ayr Galloping |
1 | 1 other | 6 Mar | 0% |
| Wetherby Galloping |
1 | 1 other | 27 Mar | 0% |