Wisbech inflicted Upminster's first defeat of the season as they moved up to fourth in the table.
They edged a close encounter thanks to tries from Ben Wicks and Neil Hunt.
Both scores were converted by Mark Laws, who also kicked two penalties.
Wisbech inflicted Upminster's first defeat of the season as they moved up to fourth in the table.
They edged a close encounter thanks to tries from Ben Wicks and Neil Hunt.
Both scores were converted by Mark Laws, who also kicked two penalties.
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