Power play: Mixed doubles curling primer with world, Brier champion Scott Pfeifer

Scott Pfeifer, a former world and Canadian curling champion, gives a rundown of what makes mixed doubles curling unique. (Rick Conrad)
As 32 curlers compete this week in Liverpool for a chance to represent Canada at the 2026 Winter Olympics in Italy, how much do you know about mixed doubles curling?
The 2025 Canadian Mixed Doubles Curling Trials began on Monday and finish up on Saturday at Queens Place Emera Centre.
While you may be familiar with the rules of traditional four-person-to-a-team curling, there are some differences in the mixed doubles game.
FULL COVERAGE: 2025 Canadian Mixed Doubles Curling Trials
So we asked one of the people uniquely qualified to give us a primer on the basics of the mixed doubles game versus traditional curling.
Scott Pfeifer is in Liverpool this week for the trials. He is the national team coach and program manager for mixed doubles with Curling Canada. Pfeifer is also a four-time world champion and a five-time Brier champion.
First of all, some of the fundamentals are the same in both disciplines. Teams play on the same size ice surface, with the same rings and the same basic rules.
“The real basic ones would be if you’re throwing a draw, that means you’re basically throwing the rock so that it’ll stop in the rings,” Pfeifer says.
“If you’re throwing a takeout, you’re actually taking out another stone. So you’re throwing it hard enough to remove the other stone from the rings. … The button is basically the centre, almost like the bull’s-eye, whoever is closest to the button at the end of the end scores points.
“Where someone’s aiming at the beginning, the shot is not where the rock ends up. So the rock, depending on whether you turn the handle left or right will travel in that direction.”
Unlike in the traditional game, in mixed doubles, there are two placement stones, one for each team, marked with an X.
“The biggest thing that you would notice is at the start of every end, there’s two placement stones. One is a guard right on the centre line and the other one is placed back four-foot. So the team that has a hammer, typically places their rock in the back four foot (ring), and basically those rocks are part of the the entire end and can be counted as scoring rocks as well.
“It adds a little bit more excitement. There’s already rocks in play. They can’t be removed. and there’s only five rocks per team every end, not including the placement stones. So the ends go really quick, but they’re also very action-packed because there’s a lot of rocks in play. “
Those placement stones can be knocked out only after there are five rocks in play.
“Until that point, no rocks can be removed, whether they’re in front, in the free-guard zone or in the rings.”
There’s also a rule unique to mixed doubles curling called a “power play”.
“A team each game has one time where they can exercise their power play option,” Pfeifer says, “which means moving those stones from the centre line over to the edge of the eight-foot (ring). And essentially what that does is it creates a little more offensive ability for the team to maybe score a few more points.
“So at the beginning of every end, those stones are placed and whether they’re placed on the centre line or on the edge of the eight-foot is the decision of the team with the hammer. But you can only use the power play once a game.”
In mixed doubles, teams can consist of only two players — one male, one female. No alternates are allowed. The games are shorter too, eight ends versus the 10 ends of traditional curling.
“There’s five rocks in an end, so one person throws either the first and the fifth rock of the end, the other teammate throws two, three and four of the end. And that can actually be switched every end if they want to.”
Scoring in mixed doubles is basically the same too, with the team with the most rocks closest to the button counting points in each end. In a regular curling match, teams can hold on to their last-shot advantage, otherwise known as the hammer, by blanking an end. Not so in mixed doubles.
“The only thing with mixed doubles curling as well that’s a little different is if you blank an end, you actually lose the hammer,” Pfeifer says. “So not very often in mixed doubles curling, do you see a blank end because then it’s to the advantage of the other team.
“In mixed doubles curling it’s one of those ones where if you miss your first shot of the end, it can get you in loads of trouble and you don’t have a whole lot of time to basically recoup that missed shot. So it can lead to a lot of crazy linescores and very entertaining games.”
Pfeifer says it’s one the reasons mixed doubles curling can be a faster, exciting game.
“I think it’s very unique dynamics when you only have two athletes on the ice. It’s very fast-paced and there’s lots of rocks in play. So I would just encourage people to go and give it a chance and try to understand the rules and I think you’ll fall in love with it just like most people have with the four-person game.”
The round robin at the 2025 Canadian Mixed Doubles Curling Trials are on at Queens Place Emera Centre continues until Thursday, with playoffs beginning Thursday evening.
Full results and standings can be found on the Curling Canada website.
Email: rickconradqccr@gmail.com
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