Jonkheer Z


  • Owner Signe Ostby
  • Year of Birth 2002
  • Breed Zangersheide
  • Color Bay
  • Height 17.1H
  • Breeder Gustaff Hayen
  • Stud Fee $1,500 USD
  • Semen Shipped Frozen

Jonkheer Z is a top jumper having great success in both the national and international showjumping arena. This Belgian Warmblood Elite stallion has seen many victory gallops in his illustrious career. Highlights of his showjumping career include a third place finish in the World Cup Finals in Goteborg, Sweden in 2013. Following his finish in the World Cup in 2013 Jonkheer Z stayed at the top of the sport, with wins in 2014 of $100,000 Sunshine Series Grand Prix – CSI-W 2* at National Sunshine Series, $100,000 Grand Prix of Del Mar at Del Mar National and a 3rd place finish in $50,000 Blenheim Spring Classic III Grand Prix. Following in 2015 with the $45,000 Grand Prix of Sacramento at the Sacramento International. He was 2nd in $56000 CSI2* Langley School District Foundation at Thunderbird Show Park B.C., and 3rd in the $100,000 Coachella Valley Classic, $100,000 Longines FEI World Cup Qualifier at Sacramento International, $60,000 Grand Prix of California at Showpark Ranch and Coast. , $10000 Valley Field & Revolution Farm Classic at the Summer Fort Classic, $25,000 Smartpak Grand Prix at HITS Desert Circuit VII, $25,000 LA Saddlery Grand Prix and $45,500 Grand Prix of the Pacific at the Del Mar International Welcome. Jonkheer Z has continued on into 2016 with wins in $40,000 Bentley Grand Prix at Menlo Charity Festival, $40,000 Circle Oak Equine Grand Prix at the Giant Steps Charity Classic, $24,500 CWD Grand Prix of Paso Robles. Among these top results are also many other victory laps for Jonhkeer Z with top 10 finishes.

This power, style and high level of performance, is showing itself in Jonkheer Z’s offspring. Next Johnny WTF was tied for High Scoring Yearling BWP/NAD first place in 2014 with an 84, then followed in 2015 with High Score 2 Y.O. with a score of 85. In 2016, Next Johnny WTF got great reviews from the judges in the BWP Stallion approval . Also, in 2016 Quicken 1 was tied for 2nd in Foal Futurity.

Jonkheer Z’s is by the talented dressage stallion Jet Set D, who was north Holland Champion Foal, and continued to impress judges with his temperament and athletic action. A striking stallion to watch in the dressage ring he also showed a powerful jump over fences with good use of his back, and skillful technique. He has produced several 1.50-1.60m horses including Piavera, Pasoa Dice, Sidney, AES approved stallion, Ukkie. Jonhkeer Z’s full brother Bariano van het Westleven is also a 1.60 horse. His dam is Ulderina van Westleven by Skippy II who produced grandprix showjumpers Maloubet with Hap Hansen, Nikita de l’Aubry with Fernando Sarsola, My Blood and Teresa Blazquez and Marly du Beaumont and Vincenzo Chimirri. View Pedigree Download Contract


  • $40K Bentley Grand Prix, Menlo Charity Show-1st
  • $40K Circle Oak Equine Grand Prix, Giant Steps Charity-1st
  • $25K Markel Insurance Grand Prix, Blenheim June Classic-7th
  • $24,500 Grand Prix of Paso Robles-1st
  • $24,500 LA Saddlery Grand Prix-3rd
  • $100K Grand Prix of Del Mar-4th


  • $1 Million AIG Grand Prix-8th
  • $100K Coachella Valley Classic-3rd
  • $100K Longines FEI World Cup Qualifier-3rd
  • $100K Grand Prix of Del Mar-5th
  • $35K 1.45 Grand Prix, Sacramento Internatioanl-1st
  • $56K Langley School District Foundation, CSI2*–2nd
  • $45,500 Grand Prix of the Pacific-3rd
  • $25K LA Saddlery-3rd
  • $35K Las Vegas Speed Classic-6th
  • $35K Intuit Grand Prix Qualifier, Del Mar Interntional-9th
  • $50K Grand Prix of Showpark-5th
  • $60K Grand Prix of California-3rd
  • $50KPurina Animal Nutrition Grand Prix, CSI-W2*–9th


  • $100K Sunshine Series Grand Prix-1st
  • $75K Las Vegas CSI-W Grand Prix-2nd
  • $50 Grand Prix of Showpark-5th
  • $25 Markell Insurance Grand Prix-7th
  • CSI 5* 1.60 Grand Prix, Spruce Meadows-6th
  • $100K Grand Prix of Del Mar-1st
  • $50K Blenheim Spring Classic III Grand Prix –3rd


  • $50K LEGIS Grand Prix of Las Angeles, World Cup Qualifier-8th
  • $33K LA National Open Welcome-8th
  • $33K iJump Sports Welcome Stake –4th
  • $25K Del Mar Welcome Grand Prix-3rd
  • $60K Grand Prix of California-2nd
  • $1Million AIG Thermal Grand Prix –4th
  • $50K HITS Grand Prix-6th
  • $54,500 HITS Grand Prix CSI-W2*, World Cup Qualifier-4th
  • $54,500 Strongid C 2X Grand Prix CSI-W2*, World Cup Qulaifier-4th


  • $53K Grand Prix, HITS Thermal 

  • $53K Purina Mills Grand Prix, HITS Thermal, World Cup Qualifier – 3rd

  • $53K Grand Prix, World Cup Qualifier – Sacramento – 6th

  • $55K Grand Prix – Del Mar Fall Festival, World Cup Qualifier – 3rd

  • $50K Fisker Automotive World Cup Grand Prix – 1st
  • $50K Las Vegas CSI-W Grand Prix, World Cup Qulaifier-1st
  • $100K Hermes Grand Prix of Del Mar-5th