Hercules Wimbledon enjoyed an outstanding weekend, with winners in the South of England senior and junior titles, and London and Surrey schools track and field championships.

Teenager Alex Robinson gained a superb win in the South of England junior men’s 5,000m championship at Crystal Palace on Sunday.

Running that distance on the track for the first time, Robinson was prominent throughout the 12-and-a-half lap race and took the lead just before the bell to snatch victory in 15 minutes, 41.42 seconds, the fourth best time posted by a Hercules Wimbledon junior to date.

Less than half-an-hour later, sprinter Dwayne Dowding showed the form of his life to take the senior men's 200m title in 21.84, battling into a 2.2mps headwind.

A delighted Dowding had earlier clocked a lifetime best of 21.61 in finishing second in his semi-final after winning his heat in 21.94, the second fastest of the heat winners.

While Dowding seemed certain to take a medal in the final, he stormed down the final straight to take the gold by just seven-hundredths of a second.

His previous best was 21.78, set last season. Dowding's time puts him third in the Hercules Wimbledon all-time rankings.

Three other Hercules Wimbledon athletes did not fare so well at Crystal Palace. After winning his junior men's 1,500m heat in 4:02.77, Liam White – the fastest of the 12 qualifiers – was hoping for at least a medal in the final.

However, he finished a disappointing sixth in 4:00.06. Kieran White was also below his best in the senior men's 5,000m, where he was ninth in 15:36.78, while teenager Cale Edmunds was millimetres over the take-off board in the junior men's long jump, in which he had three no jumps.

Surrey U17 champion Jonathan Osbourne smashed a 44-year-old club record in the Surrey schools championships at Kingsmeadow Stadium on Saturday.

He booked his ticket for the English schools championships in Birmingham next month by taking silver in the intermediate boys’ 400m in 49.53, dipping under 50 seconds for the first time.

Osbourne erased the record of 50.1, set by Tony Collins in 1966.

Osbourne conserved his energy in the heats, clocking the fourth fastest time of 53.80 in finishing second in his race.

He then unleashed a tremendous finish in the final to beat his previous best time of 50.66, set when winning the Surrey title on the same track last month.

Another Hercules Wimbledon winner was Max Mondelli, who took the junior boys’ 100m in 11.54 to add to the county title he won, also at Kingsmeadow, five weeks earlier.

Mondelli made himself favourite for the title by winning his heat in 11.78, the fastest time of the qualifying round.

Mondelli is also likely to be in action for Surrey in Birmingham. Before that, he, Osbourne and David Pratt, who was runner-up in the intermediate boys’ 100m in a personal best of 11.05, will be in action for Surrey in the South-East schools inter-county match at Horsham this weekend.

Another medallist was Emma Headley, who was third in the junior girls’ 1,500m in a personal best of 5:06.02, Eleanor Smith-Hahn was third in the junior girls’ 200m (26.82), while Joe Toomey was also third in the senior boys’ 3,000m in 9:26.81.

Joe Clark finished sixth in the intermediate boys’ 1,500m in a personal best of 4:24.77 and Ed Saywell ninth in 4:34.15.

Alessio Martello was third in the junior boys’ high jump with 1.66m and Tim Livingstone fourth in the 800m in a personal best of 2:04.16.

Cassien Hyde was seventh in the junior boys’ 1,500m (4:41.79), while Rebecca Stonme was 12th in the junior girls’ 1,500m (5:23.20).

Adam Magni took the junior boys’ 80m hurdles title at the London schools championships at Battersea Park in 12.4, with Joel Atkin fourth in 13.0 after clocking a faster 12.8 in finishing second in his heat.

David Lankes and Dalia Serafy also just missed out on medals at Battersea Park as they finished fourth in the intermediate boys’ 200m (23.2) and junior girls’ 200m (28.2), respectively.

This weekend, Hercules Wimbledon contest their third McCain’s Young Athletes League match of the season at Stompond Lane, Walton, on Sunday, while the club’s road runners are in action in the Richmond 10km road race, which incorporates the Surrey championships, at Ham.