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Throughout her career, Katy has successfully competed dozens of horses through the levels of eventing. Most notable has been her success on horses owned, bred, raised, or trained by her mother, Teresa Groesbeck. These horses include Maestoso’s Waltz, Zigarette, Oz Poof of Purchase, and Blue Squiggles. These horses all competed at their first events with Katy and went on to compete through various levels with her, including  Preliminary with Zigarette and Blue Squiggles and the CIC3* level with Oz Poof of Purchase.

Katy also produced OTTB Roman Place through the Intermediate level before his sale to Lisa Updike.