A teenager has been convicted of murdering a student who was stabbed with a hunting knife outside Clapham South Tube station.
Malcolm Mide-Madariola, 17, was described as an "innocent victim" who had stood up for a friend in a fight.
A 17-year-old boy was found guilty of murder at the Old Bailey and will be sentenced on 5 July.
Treynae Campbell, 19, of Longfield Crescent, Sydenham, was acquitted of murder and manslaughter.
The court heard how Mr Mide-Madariola, from Peckham, was stabbed three times, including once in the heart, during the fight on 2 November.
Violence flared following a college dispute two days previously.
Jurors were told how the hunting knife was 10 to 12 inches long, with a curved blade.
Campbell had earlier pleaded guilty to having an article with a blade or point.
The killer, who cannot be named for legal reasons, was also found guilty of having an article with a blade or point.