The Duchy's side host Kent with the winners qualifying for the County Championship final after both sides won their opening two games.
Kent have an extra point after crushing Somerset 43-7 last week while Cornwall edged past Hampshire 24-20 thanks to Ben Priddey's stoppage-time try.
Speaking after the game Cornwall Captain Fraser Honey was proud of the resilience shown by the side.
He said. “The boys showed a lot of character at the end, having conceded that try we were determined to win that re-start and get that final try. We probably played our best rugby of the match in that period.
“Next Saturday (20th Mat) will be a big game at Camborne and I hope that we will get a big crowd to cheer us on and hopefully book another visit to Twickenham.”
Pirates Keen to Put Up a Good Performance
