Marlow RFC advanced to the final of the Bucks Cup after seeing off bitter rivals High Wycombe.
The Riversiders booked their place in the final of the competition with a 26-19 victory at Kingsmead on Saturday.
It's the second time Marlow have beaten Wycombe this season, having triumphed 36-6 on the opening day of the league season.
They will face Buckingham in the tournament's final after they beat Amersham and Chiltern 2s 33-11.
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