What was Kevin Costner's debut in a major film?

Kevin Costner’s debut in a major film was a one-word part in Frances (1982).

What was the first movie directed by Steven Spielberg associate Frank Marshall? The first movie directed by Steven Spielberg associate Frank Marshall was Arachnophobia (1990).
Who served as the grown-up voice of John-Boy, narrating “The Waltons” (CBS, 1972-81)? Earl Hamner was the grown-up voice of John-Boy, narrating "The Waltons" (CBS, 1972-81), Jr., the show's co-executive producer, who based the series on his own recollections of growing up in rural Virginia. Richard…
Who was the “King of Daredevil Comedy”? Harold Lloyd, whose best-known movie is Safety Last (1923), was the "King of Daredevil Comedy".
Who introduced the use of “subjective sound”, a voice-over showing what a character is thinking? Director Rouben Mamoulian in City Streets (1931) introduced the use of "subjective sound", a voice-over showing what a character is thinking. While Sylvia Sidney lay alone in bed, she "remembered" what Gary Cooper…
What was Bette Davis’s film debut? Bad Sister (1931) was Bette Davis's film debut.
What was Katharine Hepburn’s film debut? Katharine Hepburn's film debut was A Bill of Divorcement (1932).