Ottawa Senators defenseman Nick Holden and associate coach Jack Capuano have joined forward Austin Watson in NHL's COVID-19 protocol, the team announced Sunday.

Watson has been in the protocol since Friday. Head coach D.J. Smith has confirmed the 29-year-old tested positive.

Holden has put up one point in 10 games this season while averaging 17:35 a game. Watson only suited up for two contests with the Senators after recovering from an ankle injury before being sidelined due to the protocol.

In a corresponding move, Ottawa recalled defenseman Erik Brannstrom from its AHL affiliate. Brannstrom has yet to play in an NHL game so far this campaign but has three points in nine games with the Belleville Senators.

Ottawa faces the Boston Bruins on Tuesday.

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Toronto Maple Leafs goaltender Petr Mrazek is expected to miss four weeks due to a groin injury, the team announced Sunday.

Mrazek suffered the injury earlier in the season and re-aggravated it recently. He last played in a game on Oct. 30.

The 29-year-old has appeared in only two contests this season, managing a .877 save percentage and 4.20 goals-against average. Jack Campbell has done the heavy lifting for the Maple Leafs, recording a .936 save percentage and 1.88 goals-against average over 10 games.

Toronto recalled goaltender Joseph Woll from the AHL's Toronto Marlies in a corresponding move Saturday. The Maple Leafs have a busy schedule over the next four weeks with 13 contests and three back-to-backs.

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Florida Panthers captain Aleksander Barkov is day-to-day with a lower-body injury, interim head coach Andrew Brunette announced, per Jameson Olive of the team's website.

Florida ruled him out shortly ahead of Saturday's clash versus the Carolina Hurricanes when Barkov suffered a flare-up before puck drop.

The Panthers and Hurricanes entered Saturday's clash as the top two teams in the NHL. Florida ultimately captured a 5-2 victory without its top player.

Barkov is off to a tremendous start in 2021-22, notching 12 points in 10 games while averaging over 22 minutes per night.

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The Chicago Blackhawks have dismissed head coach Jeremy Colliton along with assistants Sheldon Brookbank and Tomas Mitell. The team named Derek King interim bench boss.

Chicago went 1-9-2 to begin this season. Colliton was in his fourth campaign coaching the Blackhawks.

The club posted a record of 87-92-26 under Colliton. Chicago promoted the 36-year-old from its AHL affiliate, the Rockford IceHogs, upon firing Joel Quenneville on Nov. 6, 2018 - three years to the day of Saturday's moves.

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The Colorado Avalanche will be getting some much-needed reinforcements Saturday night.

Forwards Mikko Rantanen and Andre Burakovsky will return to the lineup against the Columbus Blue Jackets, and defenseman Devon Toews will make his season debut, head coach Jared Bednar confirmed, according to The Athletic's Peter Baugh.

Rantanen has missed the team's last three contests with a lower-body injury, and Burakovsky missed one game with a lower-body ailment of his own. Toews hasn't played yet following offseason shoulder surgery.

Colorado seemingly has yet to ice a fully healthy lineup this season and still won't be at full strength Saturday despite the additions. Star defenseman Cale Makar remains sidelined after missing the team's last game, and Valeri Nichushkin is also out.

The Avalanche have struggled out of the gate to a 4-4-1 record thus far.

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The Edmonton Oilers retired Hall of Fame defenseman Kevin Lowe's No. 4 jersey prior to Friday's clash against the New York Rangers.

A six-time Stanley Cup champion and a major component of the Oilers' dynasty era, Lowe recorded 431 points over 1,254 career NHL games.

Lowe spent his first 13 seasons in Edmonton and won his first five Stanley Cup championships as an Oiler. He notoriously played through a broken wrist and broken ribs en route to Edmonton's Cup victory in 1988.

Lowe also played for the Rangers for four seasons and won his sixth Stanley Cup in the Big Apple. He returned to the Oilers for a second stint in 1996 and played one full campaign before retiring in 1998.

During the festivities, the Oilers also shared a tribute video for their first-ever draft pick.

After hanging up his skates, Lowe stuck around with Edmonton and has since served as an assistant coach, head coach, general manager, and president of hockey operations. He's currently the team's alternate governor.

The 62-year-old was inducted into the Hockey Hall of Fame in the Class of 2020. However, the ceremony was postponed until Nov. 15 of this year due to the pandemic.

Lowe is the eighth Oiler in franchise history to have his number retired.

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