Seasons grind down to defining moments, little watersheds – a bounce of a ball, a breakaway try, a hastily-flung forward pass. Those defining moments tend themselves to define relegation play-offs, and often the winner is decided not by magic footwork or beautiful rugby, but by which team retains enough composure to avoid critical mistakes. Nenagh and Rainey are two sides now fighting for their identity. Demotion to 2B would be, psychologically at least, a catastrophe.