Thursday, Aug. 21, 2025

Jonkheer Z Makes His Way Back To Guy Thomas For Paso Robles Grand Prix Win

Paso Robles, Calif.—June 4-5  

When Zangersheide stallion Jonkheer Z (Jetset—Ulderina van Westleven, Skippy II) surfaced in the barn of California-based New Zealander Guy Thomas' Willow Tree Farm, not many realized that the change was a homecoming of sorts for the veteran horse.

Thomas’s father, Butch, found “Johnny” for Karl Cook seven years ago, when Cook rode with the well-known, Bay area trainer.

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