Defending champions Ebbw Vale knew this was a crunch match for them .
A victory over arch rivals Cross Keys would clinch the final place in the top eight before the Principality Premiership splits for the first time into two leagues .
Defending champions Ebbw Vale knew this was a crunch match for them because a victory over arch rivals Cross Keys would clinch the final place in the top eight before the Principality Premiership splits for the first time into two leagues .