For more than a decade, brothers Corey and Tai Webster have been key figures in New Zealand basketball.
They have been teammates for the Tall Blacks, NZ Breakers and most recently, Perth Wildcats.
On Thursday, they will do something they've never done before - compete against each other.
In a week of firsts for the Websters, Tai will pull on an Otago Nuggets singlet, as older brother Corey suits up for Canterbury Rams - two teams they never envisioned playing for.
"Yeah, I don't know anything about the South Island to be honest," Corey told Newshub.
"Never in the South Island, you know?" added Tai. "Pride and joy of Auckland city."
When the Rams and Nuggets meet at Christchurch, the Websters will play on opposite sides of the court for the first time and they know exactly what's coming their way.
"Probably not a lot of chirping from him, but me, I like to talk a lot," said Tai. "I'm going to do everything I can to get under his skin."
"It's impossible to get under my skin," Corey retorted. "I've been playing the game for too long."
More than sibling rivalry is on the line. Just a month out from the playoffs, the fourth-placed Nuggets hoping to claim back-to-back NBL titles, while the second-placed Rams seek their first championship in 31 years.
"I'm down here to do a job and help them win," said Corey, of the Rams' prospects. "They've been doing good, the goal is always to get a championship.
"That's why I'm here."
Before then, there's another important crown to be decided - brotherly bragging rights.
"I know the tricks as well," said Tai. "You know, 28 years of following him around... I know all the tricks."
"Oh yeah? We'll see how it goes," Corey hit back. "Lucky it's a team game."
Two brothers from Auckland will helping decide who are the pride of the south in 2023.