The teenager stabbed in a knife attack next to Burgess Park yesterday evening does not have life-threatening injuries, say police.
Southwark MPS also confirmed he was stabbed during a fight.
Officers were called at 6.40pm, to reports of a stabbing.
Witnesses had reported a crowd gathering near Wells Way with voices raised before the incident.
London’s Air Ambulance was seen landing nearby in Nursery Row, as it had on Friday responding to a separate knife attack that left a man injured on Browning Street.
Police say there have been no arrests so far.
Anyone with information should call 101 or contact Crimestoppers on 0800 555 111.