Hawke's Bay manager Kath Boyd said the event was "phenomenal" and was their biggest outing yet with 100 mentors and mentees attending.
"Feedback so far from our mentors was that they had a really great time.
"It was great for the young people to meet new people and the mentors got to meet new people too, it's an opportunity for new friendships to be formed across all ages."
Tamati says after being matched with mentor Brendan, he gets along better with his family, does more things after school and in the weekend and gets angry less often.
Together they play tennis and Brendan feels it has made a difference to Tamati's outlook.
He recommends being a mentor as it is "amazing" to watch a young person develop.
Mentors are interviewed by Big Brothers Big Sisters, police vetted, referee checked, trained and offered ongoing professional development.
To become a mentor email hboffice@bbbs.nz.