The U.S. men's curling team suffered two losses to China and Italy in round-robin play on Tuesday, hurting their hopes for a semifinal spot.

A controversy brewed on Friday when Sweden’s men’s curling team accused Canada’s Marc Kennedy of breaking rules for how he was throwing the rock down the ice. But what are those rules? And what are the Canadians being accused of?

It’s a big Wednesday schedule at the Cortina Olympic Curling Stadium. Sweden’s Anna Hasselborg (6-1) has already clinched a spot in the semifinals. Switzerland’s Silvana Tirinzoni, likely competing in her final Olympic Winter Games, is tied for second with USA’s Tabitha Peterson at 5-2.

CORTINA D’AMPEZZO, Italy (AP) — Controversy is swirling in curling at the Winter Olympics. The Canadian men's and women's teams, as well as the British men's team, have been accused of the same infraction: double-touching the curling stone after it is released.

CORTINA D'AMPEZZO (AP) — Niklas Edin saw it coming. Last May, the soon-to-be curler for Team Sweden at the Milan Cortina Olympic Games was incensed. He kept witnessing the same rule infraction — called double-touching — in international curling competitions,

Team USA curler Korey Dropkin defends Canadian player Marc Kennedy amid allegations of an Olympic rule breach on the ice.

Canada's curling team fires back at Sweden after the Swedes accused Canadians of cheating at the Winter Olympics. Marc Kennedy alleged Sweden planned to catch teams breaking rules.