Canadian cross-country skier Alex Harvey moved up one spot to eighth place in the Tour de Ski after finishing 15th in Tuesday's men's 1.2-kilometre sprint in Germany.

Sprint specialist Len Valjas finished a Canadian-best 10th in the stage and sits in 61st place overall. With no more sprint races left on the Tour schedule, Valjas will now drop out.

Norway's Emil Iversen claimed his first World Cup victory, clocking 2 minutes 25.21 seconds to beat Russia's Sergey Ustiugov by 1.03 seconds and Kazakhstan's Alexey Poltoranin by 1.40.

"I am really surprised to be first," Iversen said. "Ustiugov set the speed after the start and I tried to keep up. I was first on the top and I thought I could go for podium. I chose a good line in the downhill and to the finish. But I am still very much surprised to win."

Martin Johnsrud Sundby of Norway was fourth, but maintained his Tour de Ski lead through four of eight stages. Sundby has a 1:33.6 lead over compatriot Petter Northug Jr., who was fifth.

Harvey trails the leader by 3:22.2.

American Caldwell takes women's sprint

Sophie Caldwell of the United States won the women's 1.2-kilometre sprint for her first World Cup victory.

Caldwell finished in 2 minutes 46.38 seconds to edge Norway's Heidi Weng and Ingvild Flugstad Oestberg by 0.10 and 0.80 seconds, respectively.

"It was a perfect day," said Caldwell, only the second American female to win a cross-country ski World Cup. "My one goal for the final was go behind Ingvild and try to follow as far as I could. I was focused on the downhill where I knew my strength was."

Sweden's Ida Ingemarsdotter was fourth, followed by Norway's Therese Johaug.

Oestberg leads the women's Tour, with Johaug 30.1 seconds behind. Weng trails by 2:16.3.

No Canadians are entered in the women's event.

With files from The Associated Press