Wife v wife battle looms in WBBL decider

Scorchers allrounder Marizanna Kapp says she will feel nervous when she comes up against her wife and Strikers opener Dane van Niekerk in the WBBL final.

When Marizanne Kapp runs in to bowl her first over in Saturday's WBBL final at Optus Stadium, her wife will be hoping the star Perth Scorchers allrounder doesn't come away with a wicket.

That's because Kapp's wife is Adelaide Strikers opener Dane van Niekerk, who has already been dismissed twice this season by Kapp.

The wife versus wife battle looms as a fascinating subplot to Saturday's decider at Optus Stadium.

Van Niekerk was dismissed by Kapp for five and 10 in their two match-ups this WBBL season, with the Scorchers going on to win both games.

Kapp can't help but feel fearful the tables might turn when it matters the most.

"I'm a bit nervous that I got her out twice this season and I'm nervous that the third time might be her day," Kapp told AAP.

"If we bowl first, it's literally me up against her immediately.

"Every now and then she's a bit upset with me, because she's said previously that people absolutely annihilate her on social media every time I get her out, so she's not looking forward to that.

"But look, it's part of the game and we're used to it.

"I always tell everyone that it's never easy playing against Dane because she knows me so well and she knows what I'm thinking and what I'm trying to do."

Kapp has built up somewhat of a knack of dismissing van Niekerk on the rare occasions that the South African teammates are on opposing sides.

"In the first ever Kia Super League season (in 2016) I played against her, and she was absolutely smashing my team all over the place," Kapp said.

"She was on 96 and was on her way to hitting the first hundred of the competition, and I got her out there as well.

"I felt so bad, because that would have been her first T20 hundred as well."

The pair, who married in 2018, spent numerous campaigns at the Sydney Sixers together before Kapp decided to join the Scorchers ahead of this season.

"We've always been open to going to separate teams," Kapp said.

"In the past I got so annoyed when journalists kind of painted this picture that we can only play in the same team, but it's never been a case of that."