Manyai (25), formerly eighth-ranked in Hungary, has come to New Zealand to coach, but took the opportunity for matchplay and beat Alex Low (Nelson) 6-1, 6-4 in a hard-hitting final.
Hume was pushed to three sets by Southern and St Hilda's team-mate Jessie Stevenson, but came home the stronger to win the decider 6-0.
Low drew the best out of the Hungarian, who had cruised until the final, and although Low had the bigger serve, Manyai was more reliable and forceful off the ground.
Otago's Ryan Eggers had fallen behind 0-4 in each set but showed his renowned fighting qualities in the semifinal to push Manyai to 4-6, 3-6. Low had beaten student Jong Kyu Kim, of Korea, in straight sets, but not before Kim had run down several seemingly impossible retrievals. However Low had the final say in two closely fought sets. The score was 6-3, 7-5.
Hume fell behind 0-4 in the second set of her final after taking the first 6-3, but pushed hard, only to go down 4-6. She was all efficiency in the final set and ran away with the title.
The first semifinal was a "game of two halves," as Stevenson took nearly one and a-half hours to outlast Hannah Speight in a 9-7 tiebreak first set. The resistance ended and she ran away 6-0 in the second.
Hume was too solid for Heike Cebulla-Elder, winning 6-1 6-2 in the other semi.
The men's doubles final went to Manyai and 14-year-old Mitchell Sizemore, who beat Low and Chris McKegg (Wellington) 6-4 6-4.
Sizemore, one of Otago's brightest stars of the future, handled most of what was thrown at him, and also took chances set up by his powerful partner.
The women's doubles went to Stevenson and Speight, who claimed a walkover due to illness.
The men's special plate was won by George Alexander, who beat Sizemore 6-4, 4-6, 6-3, while Rebecca Dellaway (North Otago) beat Rileigh Fields 6-1, 6-2 to win the women's consolation event.
