Tamai said he was delighted with the result and said it showed the depth and quality in local tennis.
"It's fantastic for the whole region and it was an overall team effort," he said. "We had a very strong squad - in previous years we've either had strong male or female players but this year everyone was on top form.
"On paper all of the other teams looked dangerous but we all kept cool and calm and dominated. It's awesome for us."
This year saw the Rosebowl return after a five-year absence on the tennis calendar.
"It's a great competition and to have it here locally was a scalp," Tamai said. "This gives tennis in the area another boost."
Rosebowl tennis championships results:
Saturday April 08
Round 1: Tennis Bay of Plenty beat Tennis Eastern 5-4; Tennis Western Bay of Plenty beat Waikato/Thames Valley 7-2.
Round 2: Tennis Eastern beat Waikato/Thames Valley 8-1; Tennis Bay of Plenty beat Tennis Western Bay of Plenty 7-2.
Sunday April 09
Round 3: Tennis Bay of Plenty beat Waikato/Thames Valley 9-0; Tennis Eastern beat Tennis Western Bay of Plenty 6-3.
Winners: 1. Tennis Bay of Plenty; 2. Tennis Eastern; 3. Tennis Western Bay of Plenty; 4. Waikato/Thames Valley