AP Photo DETROIT’S TYLER BERTUZZI scores against Montreal goaltender Carey Price as Canadiens’ Ben Chiarot (8) and Phillip Danault (24) defend during the first period Thursday.

MONTREAL (AP) — Claude Julien feels his Montreal Canadiens have simply not been sharp enough to start the season.

The Canadiens lost 4-2 to the Detroit Red Wings in their home opener on Thursday night, Montreal’s third defeat in a week.

The Canadiens were coming off a 5-4 overtime loss in Buffalo on Wednesday.

“We have to find that sharpness if we’re going to win some hockey games,” Julien said. “Physically, we need a break. Mentally, we need to sharpen up. We’ll do a little bit of video tomorrow and see if we can’t sharpen the guys up a little bit.

“They (Detroit) forced errors and took advantage of them. We’re making a lot of mistakes and they’re costing us.”

Anthony Mantha scored his sixth goal of the season and Detroit snapped a nine-game losing streak against Montreal.

“Just my confidence right now,” said Mantha, trying to explain his early-season success. “My linemates are feeding me properly and right now it’s going in so I just need to keep shooting.

“Obviously they had our number,” said Mantha, who is the grandson of Canadiens great Andre Pronovost. “We came out strong and Bernier played unreal in net. We’re happy about our performance.”

Darren Helm, Tyler Bertuzzi and Luke Glendenning also scored for the Red Wings, who have three wins in four games this season.

Defenseman Danny Dekeyser had two assists and Jonathan Bernier made 33 saves on 35 shots.

Joel Armia and Max Domi scored for the Canadiens, who were playing the second game of a back-to-back following a 5-4 overtime loss in Buffalo. Carey Price stopped 30 of 33 shots.

Detroit had not won in regulation time in Montreal since 2007.

With the score tied 2-2 in the second period, Mantha scored the eventual winner on the power play at 15:38.

Mantha and Bertuzzi have combined for 10 of Detroit’s 14 goals this season.