Wealdstone snatched a last-minute winner at Tooting and Mitcham United in their 3-2 victory on Saturday.
Danny Spendlove netted the crucial goal two minutes into injury time to send the visitors up to seventh in the Ryman Premier table.
Tooting started the better of the two sides and took the lead when Paul Vines struck a brilliant long-range effort into the net.
The Stones responded and levelled through Kieron Forbes after he grabbed his first goal for the club.
But the hosts regained the lead just before the break when Michael Antonio struck from a corner.
The Stones regrouped and deservedly levelled in the 65th minute when Ryan Ashe struck a superb free-kick beyond the goalkeeper.
The match appeared to be heading for a draw but Wealdstone had other ideas and Spendlove was the match winner in a dramatic finale.
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