Anthony Mantha has been suspended for Canada's quarterfinal matchup with Switzerland for a check to the head of Colin White during Tuesday's game against the United States, the IIHF announced Wednesday.

Mantha is tied for the tournament lead with seven goals and paces Canada with 12 points.

Canada finished atop Group A, earning a quarterfinal matchup with Group B's No. 4 seed. However, Switzerland has often been a thorn in Canada's side on the international stage: The Swiss upset the defending gold medalists at the 2006 Winter Olympics, took Canada to a shootout at the 2010 Olympics, and most recently, gave the Canadians a run for their money at the 2019 world juniors before ultimately losing 3-2 in round-robin action.

Mantha scored a career-high 25 goals in 67 games for the Detroit Red Wings this past season.

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Peter DeBoer lamented the fact that Erik Karlsson wasn't at 100 percent during the playoffs, and the San Jose Sharks head coach said the superstar blue-liner wasn't fully healthy and thus at his best for much of the season.

"Sure (it's) disappointing, absolutely. Maybe the best defenseman in the world or in that conversation. But really, we had him healthy for probably six weeks and dialed in," DeBoer told the assembled media, including Sportsnet, following his team's elimination Tuesday night.

"The first two months of the season, he was getting used to us, (maybe) two-and-a-half (months)," the Sharks bench boss added. "I thought he got dialed in in January (or) February, and I thought maybe we were the best team in the league through that stretch and then he wasn't healthy again."

DeBoer declined to specify what Karlsson's most recent injury was, but the all-world rearguard was limited to about six minutes in the third period of Game 4 of the Western Conference Final against the St. Louis Blues.

He left Game 5 and didn't return after playing about 10 minutes, and didn't suit up for Game 6 on Tuesday, which the Blues won to end San Jose's season.

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Peter DeBoer is taking some of the blame for the fact that Joe Thornton won't win his first championship this spring.

"He's the face, he's the heartbeat of the organization," the San Jose Sharks head coach told the assembled media, including Sportsnet, following a season-ending 5-1 defeat to the St. Louis Blues in Game 6 of the Western Conference Final on Tuesday night.

"Like all the players in that room, as coaches, we're disappointed for not helping him get there because he gives you everything he's got and (he) should be there," DeBoer added. "It's hard not to feel responsibility as one of the people around him for not helping him get where he belongs. He belongs playing for a Stanley Cup and that's the disappointing part."

Thornton said postgame that he hasn't thought about his future.

The 39-year-old is a pending unrestricted free agent who's spent parts of 14 of his 21 seasons with the Sharks.

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Joe Thornton wasn't ready to say whether he plans to continue his career in the aftermath of his club's elimination on Tuesday night.

"No. Nope," the veteran San Jose Sharks forward told reporters, including NHL Network's Jon Morosi, when asked if he's thought about his future following the Sharks' 5-1 loss to the St. Louis Blues in Game 6 of the Western Conference Final.

Thornton is a pending unrestricted free agent who will turn 40 on July 2, one day after free agency opens.

He contributed 51 points in 73 games during the 2018-19 regular season, adding 10 points in 19 playoff contests.

Tuesday's loss ended Thornton's 21st NHL season. He's spent parts of 14 campaigns with the Sharks.

The supremely skilled playmaker has signed one-year contracts to remain with San Jose before each of the last two seasons.

Thornton ranks eighth on the NHL's all-time assists list, and 14th among the league's all-time points leaders.

He's also the Sharks' all-time assists leader, sits second in franchise history in points and games played, and ranks third on San Jose's all-time goals list.

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Referee Wes McCauley was forced to exit Game 6 between the St. Louis Blues and San Jose Sharks in the first period after colliding with linesman Scott Cherry during play.

Gord Dwyer replaced the official, and the NHL later announced McCauley will not return.

Sportsnet's Scott Oake said on the broadcast that McCauley told him it's a hamstring injury.

The veteran referee is the most popular official in the league, and one of the most well respected.

He'll likely be in line to work the Stanley Cup Final if healthy.

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San Jose Sharks captain Joe Pavelski is listed among the scratches for Game 6 of the Western Conference Final against the St. Louis Blues.

The Sharks are already without Erik Karlsson and Tomas Hertl, who were ruled out earlier Tuesday.

All three players left Game 5 with various injuries and didn't return.

Pavelski was listed as a game-time decision.

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Dave Tippett could succeed Ken Hitchcock in Edmonton.

Tippett remains the front-runner for the Oilers' head coaching job, and the club could hire its new bench boss as early as Friday, according to TSN's Ryan Rishaug.

TSN's Pierre LeBrun later backed up Rishaug's report, adding that Tippett "still figures prominently" in Edmonton's search.

The former Arizona Coyotes head coach has been a senior advisor with the Seattle-based expansion franchise since last June.

Tippett reportedly interviewed for the Buffalo Sabres' head coaching position before they hired Ralph Krueger.

Oilers general manager Ken Holland revealed at his introductory news conference on May 7 that Hitchcock wouldn't be back next season.

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Canada defeated the United States 3-0 on Tuesday on the final day of the preliminary round at the 2019 IIHF World Hockey Championship.

With the victory, Canada is the winner of Group A, while the Americans finish fourth. The top four teams from each group advance to the quarterfinals.

More to come.

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