Selleck had bought the horse for his daughter to ride
Actor Tom Selleck has been awarded more than $187,000 (£114,000) after a California jury found he was duped into buying a lame horse.
The Magnum PI star accused seller Dolores Cuenca of trying to pass off a show horse with a medical condition as fit to ride in competitions.
The defence had argued the actor did not check the vet records of 10-year-old animal named Zorro.
The jury's award covers the cost of the horse and additional boarding costs.
The $120,000 (£73,000) horse had been intended for Selleck's 20-year-old daughter, Hannah, to ride in amateur competitions.
A second trial will be held next week to determine how much Selleck should be paid in damages.
"We are pleased with the jury's verdict and we look forward to the proceedings on Tuesday," said Selleck's lawyer, George Knopfler.
He declined to say how much the actor was seeking in punitive damages.