Sam Francis scored his 49th goal of the season as Withdean took a huge step towards landing the Combined Counties League title with a 4-1 win at Reading Town.
Victory left Withdean third in the table but only two points behind AFC Wimbledon with seven games in hand and three behind AFC Wallingford, who have played six more.
With Wallingford losing at home, Withdean now look favourites to be crowned champions.
Reading took a first-half lead through Raymond Spence but Withdean hit back with goals from Mark Pulling, Shaun Grice and Owen Hill.
Francis added the fourth and will be looking to complete a half-century when Withdean visit Hartley Wintney tomorrow.
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