The Sharks had beaten the defending champion Highlanders but couldn’t quite get the result that would have lifted them.
The Chiefs made a flying start when Tamanivalu dot down after just 51 seconds.
They grabbed their second try in the 24th minute when No.8 Michael Leitch scored out wide.
The South Africans’ dominant lineout maul and strong scrum also came to the fore.
Down 15-3, they got their opening try when hooker Kyle Cooper finished off a clinical lineout drive.
They tied the score 15-15 when another penalty was kicked to the corner and April showed some slick footwork to score.
Down 24-15, the Sharks put another penalty into the corner and their lineout drive, which had been a huge weapon, again game up with the goods.
This time, it was substitute hooker Chiliboy Ralepelle who touched down and five-eighth Garth April added the extras but it was the home side that thang on to win by 24 points to 22.