Tayo Andrews took a massive leap forward in his high jump career as a personal best moved the teenager into the echelons of Britain's best athletes in the discipline.
In jumping 2.01m, the 17-year-old Herne Hill Harrier rose to 21st in the national rankings for 2014 and sixth in the U20 list.
Andrews, whose previous personal best of 2.00m was set last summer, was competing in the Windsor, Slough, Eton & Hounslow AC winter series at Eton where he finished first in the U20 event.
The leap was a significant improvement on his form of just a week ago when Andrews jumped 1.91m at the London Indoor Games.
Andrews will represent Harriers in the British Athletics League this summer as the club seeks an immediate return to the Premiership following last season's relegation.
Away from the track, Herne Hill dominated the East Surrey League cross country relays at Wimbledon Common, winning each age category.
Notably, a solo-running Chris Busaileh beat all other teams, including Herne Hill's senior A squad, as he ran each of the four 1.9-mile legs.
Clubmen were also in action at the latest instalment of the Regent's Park 10k winter series; Louis Waterman-Evans finished 10th in 38:19, and Tom Levitt was 17th, clocking 39:23.
In the pick of the parkrun action, Mohammed Ismail was first at the Brockwell event in 17:12, with Gary Ironmonger third in 17:34.
Jonny Muir finished sixth at the Dulwich parkrun in 17:15.
Here they come: The young crowd at the East Surrey League meeting
There they go: It's a wee bit damp on Wimbledon Common