from www.tmz.com – Devon James — Tiger Woods mistress #428 — was shown no mercy by a judge this morning, who threw out her paternity case against the golfer.

James claimed Tiger is the baby daddy of her 9-year-old son, and wanted the judge to force Tiger to submit to a DNA test. But the judge in Manatee County, Florida dismissed the case … partly because Devon was a no-show.

Fact is … Devon doesn’t even have current custody of the boy — her mom does.

THE paternity case brought against Tiger Woods by porn star and alleged mistress Devon James has been thrown out by a Florida judge.

Elsewhere: Entertainment website TMZ reported James, 29, alleged the golfer was the father of her nine-year-old son and filed a claim for Woods to submit a DNA test.

She said she met Woods while attending a Christian school program at age 19.

But the judge dismissed the claim Tuesday as James failed to appear in court and because the adult film star does not even have custody of the child — he is currently in the custody of James’ mother.

James’ mother, Sandra Brinling, had described her daughter as a “pathological liar.”

“[My daughter is] only out to lie, steal and cheat,” Brinling told RadarOnline in June.

“All she is looking for is to get money from [Woods].”