This Year's 9-Year-Olds on Track for the US Equestrian Open of Eventing
They've proven themselves at three-star and are finding their feet at four-star. From Le Lion appearances to clean jumping records, these rising US partnerships could be contenders for the US Equestrian Open of Eventing in 2026.
As we look forward to the 2026 season, four US-based combinations have established themselves as serious prospects for this year's US Equestrian Open series. These nine-year-old horses and their riders have built impressive records over the past two years and are ready to make their mark at the highest level.
The Elo is EquiRatings' overall performance rating that measures a horse's performance across all three phases - the higher the number, the stronger the horse. Here are the top-rated US nine-year-olds heading into 2026.
Cooley Corraghy Diamond & Kimberly Severson (555 Elo)
At the top of the table is Cooley Corraghy Diamond on an Elo of 555. The nine-year-old gelding has been a model of consistency, never placing outside the top 10 across his international finishes in 2024 and 2025. His jumping record is nearly flawless; he’s been clear cross-country every time, with no showjumping round accumulating more than four faults.
The partnership have already tackled four-star competition, with four starts at CCI4*-S level including a runner-up finish at Tryon in May 2025. These impressive results suggest Kim and Cooley Corraghy Diamond are ready for the US Open's demanding tracks.
That's Me Z & Tommy Greengard (516 Elo)
That's Me Z finished in the top 20 at the Le Lion d'Angers 7-Year-Old World Championships. The gelding backed up that performance with a strong 2025 campaign as an eight-year-old, completing four events at CCI4*-S level and claiming three podium finishes.
Tommy and That’s Me Z deliver when it counts. With championship experience and consistent four-star results already on their record, this combination could be one to watch as a nine-year-old in 2026.
Conner & Isabelle Bosley (496 Elo)
Conner has yet to step up to four-star, but his three-star resume speaks volumes. The gelding closed out 2025 with a win at Maryland's CCI3*-L, posting the highest HPR of the year (96) at three-star-long on US soil. The 2025 season delivered three international wins and one runner up finish, with clear showjumping rounds every time out.
Isabelle has built a partnership with winning form. If they make the move to four-star in 2026, they'll arrive with a proven track record.
MBF Silver Bridge & Caroline Pamukcu (491 Elo)
Despite a cross-country retirement at their first international event of 2025, MBF Silver Bridge bounced back to finish in the top 10 at every subsequent start. The nine-year-old gelding consistently delivered sub-30 dressage scores and never had more than four showjumping faults across the season.
The horse is in capable hands; Caroline finished third in the US Equestrian Open series last year. While they have yet to tackle four-star, the consistency and quality suggest they could be ready to make that step in 2026.
Looking Ahead
These four combinations have proven themselves at three-star level and are emerging at four-star. With the horses now in their nine-year-old season, we could potentially see them challenging for US Equestrian Open qualifiers in 2026.
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