In game two the Bay of Plenty side batted first against Auckland and Bharat Popli was the star as he top scored with 67, helping his team to a total of 210 runs.
It was a big total to chase and Auckland could only manage 120 in reply.
"Day two was the big day as winning game three meant winning the tournament and defending the title," Gosai said.
"Bowling first [against Wellington A] our side had a great start and snapped up six early wickets and had them at 67/6, but a resilient Wellington side got to 140 at the end of 20 overs."
The total was chased down in quick fashion by Bay of Plenty for the loss of just one wicket. Umesh Morarji top scored with 85 and was also named Bay of Plenty's most valuable player.
"With a number of players named in the tournament side I'm very proud of the boys for coming out champions for another year and am looking forward to defending the title for again.
"These types of tournaments are very special to the club as the boys play for the members of the club who have passed away. We dedicated this tournament to a close friend and member of the club Dipak Dheda, who worked very hard behind the scenes to make these tournaments happen and passed away last year."