After a one-fight stint in the UFC in 2007, where he was defeated by Eddie Sanchez via knockout, Palelei is making a much better fist of his second dig.
The 36-year-old has won his past three fights in the world's biggest MMA promotion and has shown an impressive ground-and-pound game, while he is also a strong wrestler.
"Now I'm here, and I deserve to be here. I'm going to keep learning, keep pushing and keep climbing up the ranks,'' Palelei said in his post-fight press conference in Cincinnati on Sunday.
"My last 11 fights have been knockouts, and my ground-and-pound, if I get on top of you, you're not going anywhere. It's one of those that it's always good to get a win like that.''
Rosholt, who will put his six-fight winning streak on the line, is undefeated in his first two UFC bouts since joining the promotion last year and the 1.88m-by-110kg 27-year-old is an accomplished collegiate wrestler from Oklahoma State.
The Palelei v Rosholt bout brings the Auckland card to seven fights, although more are expected to be announced in the coming weeks.
The final card will likely sit around 12 bouts and there's a strong possibility more Kiwis will be added to the card with a women's fight also rumoured.
Meanwhile, in a change to the Auckland card, the UFC confirmed today that Australian light heavyweight Anthony Perosh has been ruled out due to injury and American Sean O'Connell (15-5) will now face Gian Villante (11-5) instead.