Humboldt's Dustin Kalthoff and partner, Marliese Kasner are rocking along at the World Mixed Curling Championships in Karlstad, Sweden.

The pair is a perfect 4-0 through the first three days at the 42 team event.

They opened with a 9-3 win over France on Sunday, that was followed by an 8-3 victory over Ireland, a 9-5 triumph versus Italy. Their most recent contest wasn't much of one, they ousted Serbia 14-0 in just six ends.

They sit atop their pool with their 4-0 mark but next up is the also undefeated Chinese pair. The winner of their game will be guaranteed a playoff spot come Friday.

The game against China is at 1pm local time on Wednesday. A match-up against Australia will close their round robin schedule.

Bolt FM's Clark Stork and Ronald Quaroni caught up with both Kalthoff and Kasner, as well as their coach, Jeff Stoughton on Tuesday.

You can hear that interview below.