Ruapehu have dropped back from their 2023 Premier campaign, while Pirates initially were going to be a Premier club but will remain in this grade for 2024.
Utiku, repeat semifinalists Kaierau and perennial contenders Hunterville could also be strong.
An expanded WRFU Women’s competition also kicks off on Friday night as Taihape host last year’s runners-up Kaierau, while on Saturday the new-look Rātana Wahine play their debut game as hosts against Marton QueenBeez.
Defending champions Marist, who won a thrilling final with Kaierau last year, 20-17, have the bye.
Draw, April 12-13
Senior, 1pm unless noted
Counties v Utiku, MacNab Domain, 2pm
Ratana v Marton, Ratana Pa, 11am
Ruapehu v Celtic Rochfort Park
Kaierau v Border, Country Club
Taihape v Knights, Memorial Park
Pirates v Hunterville, Spriggens Park
Women’s
Friday: Taihape vs Kaierau, Memorial Park, 7.30pm
Saturday: Ratana vs Marton, Ratana Pa, 1pm