The 85-year-old former ruler of Sydney's airwaves is in the eighth week of his estimated four-month fight against 22 charges of indecent assault and sexual touching without consent.
Six complainants allege Jones kissed, groped, or subjected them to sexual misconduct between 2003 and the end of his highly influential broadcasting career in 2020.
Two of those were aged under 18 at the time of the alleged incidents.
But crown prosecutor Georgina Wright SC made a surprise announcement in the NSW Local Court on Monday.
One charge of indecent assault against a 17-year-old boy was to be withdrawn and dismissed, she told the court.
No reason was given.
During her opening statement, Ms Wright foreshadowed the complainant would tell the court Jones had touched and squeezed his bottom at a function.
She expected the court would be told that he had mentioned the incident to a confidante but hadn't reported it to police because it was his word against that of the talkback titan.
Jones denies the alleged groping took place, and has pleaded not guilty to all of the charges against him.
The dismissal of the charge means he is now facing 19 charges of indecent assault and two charges of sexual touching without consent against five men, one of whom was 17 years old at the time of the alleged offending.
The announcement came in the middle of evidence related to the third complainant, a prominent athlete who alleges Jones kissed him without consent at a sports function more than a decade ago.
"I think I froze at that time," he said during his four days in the witness box.
"I was in disbelief ... there's no reason to suggest why in this public situation you'd kiss someone this way."
But three people who attended the event have told the court they didn't witness the alleged offence.
One attendee described Jones as "very professional" on the night in question and said he didn't see any real engagement or familiarity between the then-2GB breakfast host and the athlete.
"I didn't see them have any contact with each other," he testified on Monday.
"Had I seen a kiss or even an embrace, I would have noticed that."
Another attendee told the court he didn't have a specific recollection of the athlete being present at the event and he doesn't believe he saw him being kissed by Jones.
He agreed he told police he hadn't seen anything untoward at the function and he would remember if he had.
Similarly, a politician previously told the court he hadn't seen Jones behave inappropriately towards anyone at the event.
The witnesses acknowledged they hadn't been closely monitoring the longtime shock jock and the athlete the entire night, with one telling the court he believes he left before the event concluded.
Jones, who coached the Wallabies and Balmain Tigers before his radio career took off, has denied the alleged kiss occurred and his lawyer has pointed out inconsistencies in the athlete's statements about where they were positioned.
The sportsman has firmly stood by his account, insisting: "I know the kiss happened because I can't get it out of my memory."
He alleges Jones kissed him without consent for a second time at his waterfront Sydney apartment years later.
The court was told the prominent broadcaster said "I love you" and pressed his genitals against the younger man's body before being pushed off and told "OK mate".
Jones is charged with one count of indecent assault and one count of sexual touching without consent against the athlete, both of which he maintains did not happen.
1800 RESPECT (1800 737 732)
National Sexual Abuse and Redress Support Service 1800 211 028
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