William, 29, scored four times and his polo team won 5-2 on Saturday in a charity match before a celebrity-filled crowd at the Santa Barbara Polo & Racquet Club in Carpinteria.
His wife Catherine, Duchess of Cambridge handed out awards, and William gave her kisses on both cheeks as the crowd of 800 went, "Ahhhhhh."
During the match, Kate, wearing a Jenny Packham dress, had smiled and clapped each time her husband scored.
Afterwards, they waved goodbye and received a loud roar, leaving for a black-tie BAFTA-Los Angeles dinner and reception with guests including Jennifer Lopez, Nicole Kidman, Tom Hanks and Barbra Streisand.
