Dozens of the world's top curlers, including Olympic gold medallists Brad Gushue, Brad Jacobs and Jennifer Jones, say they won't use new broom technology that threatens to alter the sport dramatically by slowing down and changing the direction of a rock in motion.
A statement posted on Team Canada's website has been signed by at least 34 elite curling teams, saying they will not sweep with brooms that have "directional fabric" at World Curling Tour, Curling Champions Tour and Grand Slam of Curling competitions.
The move comes as the curlers wait for the sport's governing bodies to catch up and introduce new rules on broom technology.
"We want the skill of curling to determine who wins and we want the teams who've put in the hardest work to win. We don't want the teams with the best technology and whoever sponsors who to win," Team Canada lead Nolan Thiessen, who wrote the statement, told CBC News on Friday.
When a new gadget fundamentally alters a sport, the powers that be often step in and declare it illegal in competition.
Curling's top teams aren't waiting for the World Curling Federation or Curling Canada and are policing themselves. They hope other teams follow suit.
The statement was signed by 22 elite teams on Wednesday, including Gushue, Jacobs and Jones as well as former world champion Glenn Howard and international curlers such as Jaap van Dorp of the Netherlands and Niklas Edin of Sweden. Another 12 teams were added to the list of signatories on Thursday.
Changing the game
In the sport, a curler throwing the rock aims for the skip's broom with the knowledge the stone will curl as it approaches the house.
Powerful sweepers can "hold" the stone and delay its curl or "drag" it extra distance into the house, but throwing accuracy and the skip's line calling are still paramount in the game.
Archie Manavian
Hardline Curling president Archie Manavian says his company had not received any complaints about its product, the icePad, until the curlers' statement came out this week. (CBC)
New brushes hitting the market have recently changed all that.
"It's a type of fabric that allows you to virtually steer the rock," Howard told The Canadian Press. "I use the phrase 'joystick'. I can now joystick right, left, forward, back."
Coarse material on the broomheads creates a sandpaper effect on the ice. Jacobs describes it as "flattening" while others have described it as "scoring" or "scratching" the ice.
The bottom line is sweepers use the brush's impact on the ice to manipulate the rock in ways they never could before. As in any sport, if others are doing it and winning, you will do it too.
"It's like having a rock with a steering wheel on it and you can pretty much get it to go where you want to or influence it substantially," said Curling Canada's high-performance director, Gerry Peckham.