Jackson - The fiancée of John Daly is asking the US Supreme Court to throw out an alienation of affection lawsuit filed by his ex-wife Sherrie Allison Miller.
In February, the Mississippi Supreme Court gave the green light to Miller to pursue damages against Anna Cladakis.
Miller was married to Daly from 2001-07.
She is suing Cladakis, to whom Daly became engaged in December, for unspecified damages, arguing that Cladakis broke up their marriage.
Miller says her marriage with Daly ended because Cladakis and Daly developed a sexual relationship while the couple was separated in 2007.
The Mississippi Supreme Court said Miller may have grounds to collect damages if she can prove Daly and Cladakis conducted their relationship in Mississippi.
Mississippi is one of only a handful of US states that permit lawsuits for alienation of affections.
Cladakis has argued in court filings that she doesn't live in Mississippi and neither does Daly, so Mississippi courts have no interest in the case.
Miller alleges the sexual trysts occurred in DeSoto County, Mississippi.
Cladakis' attorneys appealed to the US Supreme Court in April.
Lawyers for Miller have until May 18 to file a response.
Daly won the US PGA Championship in his first year on tour in 1991, and the British Open in 1995, among five US PGA Tour titles.