Jakub Vrana will be out four months for the Detroit Red Wings because of a shoulder injury that will require surgery.

The 25-year-old forward was injured during the first 10 minutes of practice Sunday, his first day in camp because of visa issues.

As the 2021-22 NHL season opens, the Arizona Coyotes are the only team with plans to fully relax their game-day dress code for players, according to an ESPN survey of all 32 teams.

The NHL is the only one among the four North American major men's professional sports league with a strict game-day dress code spelled out into its collective bargaining agreement. Exhibit 14, Paragraph 5 of the CBA reads: "Players are required to wear jackets, ties and dress pants to all Club games and while traveling to and from such games unless otherwise specified by the Head Coach or General Manager."

Jonathan Toews will to play for the Chicago Blackhawks for the first time in more than a year against the Detroit Red Wings in a preseason game Wednesday (8:30 p.m. ET; NHLN [JIP], NBCSCH+).

The 33-year-old captain missed last season with chronic immune response syndrome. He has participated in all five days the Blackhawks have held training camp this month, including a three-period scrimmage (15 minutes each period) Tuesday.

Seattle made its debut on Sunday night with a 5-3 win over the Vancouver Canucks in the preseason opener for both teams. With Seattle's home arena putting the finishing touches on its construction, the Kraken have taken their first preseason on the road to three junior hockey venues in the state.

The St. Louis Blues signed longtime president of hockey operations and general manager Doug Armstrong to a five-year contract extension Saturday.

Armstrong, 57, was named the organization's 11th general manager after the 2009-10 season after joining the Blues as assistant general manager in 2008.

The NHL anticipates 30 of its 32 arenas will open at 100% capacity for the 2021-22 season, according to a memo circulated to teams this week.

Due to COVID-19 restrictions, the Montreal Canadiens are expected to open at 33% capacity, or around 7,500 fans. The Vancouver Canucks will open at less than capacity, too. While the percentage has yet to be determined, the NHL initially estimated it could be at 50%.

The Washington Capitals are the first NHL team to sell advertising on its jerseys.

Washington announced a multi-year partnership with Caesars Entertainment that will place a Caesars Sportsbook logo on Capitals home and third jerseys beginning in the 2022-23 season. It is a 3-x-3.5-inch patch positioned on the upper right chest area of the jersey.

The St. Louis Blues have promoted Peter Chiarelli to vice president of hockey operations. They are also bringing back former coach Ken Hitchock as consultant, refining the front office with some Stanley Cup experience.

The NHL has completed its gambling investigation into Evander Kane, saying Wednesday that it found no evidence that the San Jose Sharks forward bet on NHL games.

Goalie Cal Petersen has agreed to a three-year, $15 million contract extension with the Los Angeles Kings, the team announced Wednesday.

Petersen's extension begins in the 2022-23 season.