Pikiao Warriors Premier, already guaranteed a spot in the Premier, lost 34-28 to Pacific Sharks Premier at Memorial Park, Tokoroa.
Pikiao trailed 26-8 at half-time and pushed Pacific all the way to the final whistle.
Head coach Jason Parata said he was disappointed with the error count on the day.
"We didn't perform in the first half - but I was proud with how they came out in the second," he said. "They could have just let their heads drop like in previous years but we fought back strongly.
"We'll need to work on little things - cutting out errors is the main focus. I'm quietly confident we'll do well though. Pacific are a tough team and we showed in patches that we can compete. I want to see that over a full game now."
There are two more rounds left in the grading competition before the league splits into two - the Premier grade (six teams) and Premier 2 (nine teams).
BOPDRL and Coastline combined district competition results:
Section 1: Taupo Phoenix Premier 6 Otumoetai Eels Premier 50
Pacific Sharks Premier 34 Pikiao Warriors Premier 28
Section 2: Taupo Phoenix reserves 4 Otumoetai Eels reserves 50
Pacific Sharks Premier 70 Pikiao Warriors Premier 14
Section 3: Ngongotaha Chiefs 48 Putauaki Stags 28
Taneatua Warriors 12 Mangakino Hawks 46
Section 4: Te Teko Bulldogs 32 Papamoa Bulldogs 36
Tauhara te Maunga - Bye.