William Nuschler Clark Jr. is an American professional baseball first baseman who played in Major League Baseball (MLB) from 1986 through 2000. He played for the San Francisco Giants, Texas Rangers, Baltimore Orioles, and St. Louis Cardinals. Clark was known by the nickname of "Will the Thrill." The nickname has often been truncated to simply, "the Thrill."

The San Francisco Giants are an American professional baseball team based in San Francisco. The Giants compete in Major League Baseball (MLB) as a member club of the National League (NL) West Division. Founded in 1883 as the New York Gothams, the team was renamed the New York Giants three years later, eventually relocating from New York City to San Francisco in 1958. The Giants play their home games in Oracle Park in San Francisco.