However, Old Blues, with goals to Franz Marco and Rueben Wood, were ahead 2-0 early against Whakatane Town.
The home team went to the break 2-1 down but three second -half goals gave them a deserved but flattering 4-2 win.
New Taupo coach Paul Drake was reasonably satisfied with his team's first performance at Crown Park. Youngster Dylan Caldwell and Tin DeRoo scored early for Taupo, who then went into their shell, allowing Otumoetai back into the game.
Taupo had the better of a scoreless second-half and although they went close on several occasions, it was 2-1 at the final whistle.
Rotorua United missed a penalty in the tenth minute against Melville United at Gower Park and the game remained scoreless until the 70th minute when Melville broke the deadlock.
A second followed just minutes later and Melville sealed the three points right on fulltime.
Rotorua Coach Neil Rush admitted Melville was the better team and deserved the win because they took their chances.
"But 3-0 was slightly flattering. With several Northern League players opting to play in the Federation League this season, Melville must be early title favourites," Rush said.
In other games, Otorohanga defeated Tauranga Boys' College 3-1 while AFC Fury gave up a 2-0 half-time lead as they drew 2-2 with Waikato Unicol in what some spectators suggested could be a precursor to the relegation battle.
Division two results: Te Awamutu 1 Clube Algeria 1, Katikati 5 Tokoroa 2, Cambridge 3 Rotorua United 1, West Hamilton 1 Tauranga City 3. Matamata - bye.