US teens deny gunning down Aussie baseballer

Two US teenagers who have been charged in the shooting death of an Australian baseball player in Oklahoma have pleaded not guilty and waived their right to a speedy trial.

On Thursday, 18-year-old Michael Dewayne Jones and 16-year-old Chancey Allen Luna were arraigned in Stephens County on first-degree murder charges in the shooting death of 22-year-old Chris Lane.

Judge Joe Enos set a trial docket date of August 18 for both teens.

Prosecutors say Lane, from Melbourne, was gunned down on August 16 last year as he jogged in Duncan, about 130km south of Oklahoma City.

Another teenage defendant, 16-year-old James Francis Edwards Jr, agreed to testify against Jones and Luna if prosecutors reduce charges against him.

He said last month that Luna shot and killed Lane from a car driven by Jones.