2:37 PM - Matt Niskanen () informed the Flyers that he will retire ahead of the 2020-21 campaign, Elliotte Friedman of Sportsnet reports.

11:14 PM - Matt Niskanen (Phi) scored a goal on his lone shot in Tuesday's 4-3 overtime win over the Islanders in Game 5. He also had one hit and one block with a plus-2 rating.

12:53 PM - Matt Niskanen (Phi) served his one-game suspension in Friday's Game 6 win over the Canadiens.

8:53 PM - Matt Niskanen (Phi) was suspended for Friday's Game 6 matchup against the Canadiens for Cross-checking forward Brendan Gallagher per The NHL's Department of Player Safety

12:12 PM - Matt Niskanen (Phi) will have a hearing with the league for his cross-check on Hab's Brendan Gallagher, per the NHL Department of Player Safety.

5:44 PM - Matt Niskanen (Phi) had eight goals and 33 points with a plus-15 rating in 68 games prior to the coronavirus halting play in March.

3:18 AM - Matt Niskanen (Phi) recorded an assist, three shots on net, three blocks and a plus-3 rating in a 4-2 victory over the Sharks on Tuesday.

11:25 PM - Matt Niskanen (Phi) scored an empty-net goal and fired four shots on net in Monday's 3-0 win over the Red Wings.

10:21 PM - Matt Niskanen (Phi) picked up two assists, one on the power play, in Friday's 4-3 overtime loss to the Penguins.

3:11 AM - Matt Niskanen (Phi) posted an assist, three shots on goal and five hits in Thursday's 5-4 loss to the Golden Knights.

1:47 PM - Matt Niskanen (Phi) (illness) is in the projected lineup for Monday's matchup with the Rangers, NHL.com's Adam Kimelman reports.

6:53 PM - Matt Niskanen (Phi) (illness) will not dress Saturday in Ottawa.

12:14 PM - Matt Niskanen (Phi) (illness) is considered a game-time decision for Saturday's game against the Senators.

12:40 PM - Matt Niskanen (Phi) scored a power-play goal and picked up an assist in Thursday's 6-1 defeat of the Sabres.

11:03 PM - Matt Niskanen (Phi) scored a goal on three shots and had three blocks in a 3-1 loss to the Coyotes.

7:26 PM - Matt Niskanen (Phi) added a pair of assists in Friday's 6-1 win over the Red Wings.

11:12 PM - Matt Niskanen (Phi) picked up two assists, one on the power play, in Tuesday's 4-1 win over the Hurricanes.

11:52 PM - Matt Niskanen (Phi) posted a plus-1 rating with five PIM, five hits and a shot on goal during a 4-3 shootout victory against the Devils on Friday.

10:58 PM - Matt Niskanen (Phi) scored a power-play goal in Monday's 6-2 win over Vegas.

9:26 AM - Matt Niskanen (Phi) was acquired by Philadelphia from Washington in exchange for Radko Gudas on Friday. The Flyers will retain 30 percent of Gudas salary as part of the deal.

9:54 PM - Matt Niskanen (Wsh) registered an assist, three blocked shots, and two hits in Saturday's 4-3 overtime win over the Hurricanes in Game 2 of their first-round series.

8:05 PM - Matt Niskanen (Wsh) returned for the second period Sunday against the Jets, Tom Gulitti of NHL.com reports.

7:48 PM - Matt Niskanen (Wsh) went to the locker room in the first period of Sunday's matchup with Winnipeg after blocking a Patrik Laine shot with his left hand, Tom Gulitti of NHL.com reports.

10:58 PM - Matt Niskanen (Wsh) recorded an assist in Wednesday's 5-3 win over the Flyers.

11:26 AM - Matt Niskanen (Wsh) registered a goal, an assist, two shots and four hits during Thursday's 4-3 overtime win against the Avalanche.

11:35 AM - Matt Niskanen (Wsh) has managed just one assist, 11 shots and a minus-7 rating during his last eight games.

12:53 PM - Matt Niskanen (Wsh) (undisclosed) will be in the lineup versus St. Louis on Thursday, Isabelle Khurshudyan of The Washington Post reports.

12:56 PM - Matt Niskanen (Wsh) (undisclosed) is hopeful to return Thursday against the Blues, Isabelle Khurshudyan of The Washington Post reports.

1:44 PM - Matt Niskanen (Wsh) (undisclosed) won't play in Monday's game versus the Predators, Tom Gulitti of NHL.com reports.

1:31 PM - Matt Niskanen (Wsh) (undisclosed) is travelling with the team and is questionable for Saturday's tilt against the Senators, Isabelle Khurshudyan of The Washington Post reports.

10:12 PM - Matt Niskanen (Wsh) left Thursday's 3-1 win over the Hurricanes in the third period due to an undisclosed injury, Tom Gulitti of NHL.com reports.

10:17 AM - Matt Niskanen (Wsh) tallied a power-play assist, two shots and seven blocked shots during Wednesday's 4-2 win over the Blackhawks.

10:54 PM - Matt Niskanen (Wsh) tallied two assists, two shots, three hits and logged 24:59 of ice time during Thursday's 6-4 comeback win over the Capitals.

9:14 AM - Matt Niskanen (Wsh) recorded an assist, four shots and four hits while logging a season-high 25:57 of ice time during Friday's 6-5 shootout loss to the Panthers.

5:59 PM - Matt Niskanen (Wsh) contributed a power-play goal and eight shots in Tuesday's 5-2 preseason loss to the Bruins.

6:47 PM - Matt Niskanen (Wsh) recorded an assist and a minus-1 rating over a team-high 24:52 of ice time during Saturday's 7-1 loss to the Blackhawks.

8:17 AM - Matt Niskanen (Wsh) (upper body) is ready for Sunday's game against the Blues, Tom Gulitti of NHL.com reports.

7:18 AM - Matt Niskanen (Wsh) (upper body) is expected to return to the lineup for Sunday's game against the Blues, Isabelle Khurshudyan of the Washington Post reports.

5:42 AM - Matt Niskanen (Wsh) is listed as day-to-day due with an upper body injury, Tarik El-Bashir of NBC Washington reports.

5:25 PM - Matt Niskanen (Wsh) found twine in Saturday's 5-2 home win over the Devils.

5:30 PM - Matt Niskanen (Wsh) recorded two assists during Thursday's 5-3 win over the Bruins.

6:40 PM - Matt Niskanen (Wsh) registered an assist during Saturday's 3-1 win over the Wild.

8:26 AM - Matt Niskanen (Wsh) (upper body) will return to Washington's lineup for Tuesday's road game against the Predators, Tarik El-Bashir of NBC Sports Washington reports.

6:55 AM - Matt Niskanen (Wsh) (upper body) has been cleared for some contact and will travel with the team for Tuesday's contest in Nashville, Isabelle Khurshudyan of The Washington Post reports.

7:26 AM - Matt Niskanen (Wsh) (upper body) said he's "feeling good," but doesn't know if he'll be an option for Sunday's home game against the Oilers, Tom Gulitti of NHL.com reports.

7:30 AM - Matt Niskanen (Wsh) (upper body) was placed on long-term injured reserve Saturday and he is considered week-to-week.

5:14 PM - Matt Niskanen (Wsh) will not return to Friday's game against the Devils due to an upper-body injury.

6:49 AM - Matt Niskanen (Wsh) logged 25:55 of ice time, including 1:08 on the power play and close to four-and-a-half minutes shorthanded in Monday's 4-3 overtime road loss to the Lightning.

8:42 AM - Matt Niskanen (Wsh) had an assist in Thursday's 5-4 shootout win over Ottawa.

5:10 PM - Matt Niskanen (Wsh) can't be picked by Vegas in the expansion draft, Isabelle Khurshudyan of The Washington Post reports.

6:23 AM - Matt Niskanen (Wsh) will not receive any supplementary discipline following his cross-check to the head of Sidney Crosby in Game 3 on Monday, Isabelle Khurshudyan of The Washington Post reports.

1:39 PM - Matt Niskanen (Wsh) will not dress for the team's regular-season finale Sunday against the Panthers, Tom Gulitti of NHL.com reports.

9:10 PM - Matt Niskanen (Wsh) posted a goal with a plus-1 rating, three blocked shots, a hit and a minor penalty in Sunday's 3-2 win against the Blue Jackets.

7:17 PM - Matt Niskanen (Wsh) tallied two assists, four shots and a plus-3 rating in Tuesday's 4-1 win over the Rangers.

7:56 AM - Matt Niskanen (Wsh) (lower body) will return to action Tuesday night versus the Rangers, Tarik El-Bashir of CSN Mid-Atlantic reports.

9:55 AM - Matt Niskanen (Wsh) (lower body) was a full participant at Monday's practice and could return to action Tuesday against the Rangers, Isabelle Khurshudyan of The Washington Post reports

6:44 AM - Matt Niskanen (Wsh) (lower body) has been ruled out for Saturday's game against the Predators, Isabelle Khurshudyan of The Washington Post reports.

7:21 AM - Matt Niskanen (Wsh) (lower body) will miss Friday's home game against the Oilers, Isabelle Khurshudyan of The Washington Post reports.

9:45 AM - Matt Niskanen (Wsh) (lower body) is uncertain to play Friday against the Oilers, Isabelle Khurshudyan of The Washington Post reports.

5:33 PM - Matt Niskanen (Wsh) (lower body) won't return to Wednesday's matchup with the Flyers.

8:12 PM - Matt Niskanen (Wsh) contributed a pair of power-play assists to Tuesday's 5-0 rout of the Hurricanes.

7:06 PM - Matt Niskanen (Wsh) registered two assists (one on the power play), three shots, one blocked shot, one minor penalty, two hits and a plus-1 rating during Wednesday's win over Boston.

7:12 PM - Matt Niskanen (Wsh) picked up three assists with a plus-1 in Saturday's victory against the Stars.

5:17 PM - Matt Niskanen (Wsh) dished out two assists Monday in an 8-7 overtime loss to Pittsburgh.

11:16 AM - Matt Niskanen (Wsh) recorded two goals, a plus-4 rating, and five shots on goal in a 5-0 victory over the Flyers on Sunday.

8:16 AM - Matt Niskanen (Wsh) recorded an assist and five shots in Tuesday's 6-5 OT win over the Maple Leafs.

6:28 PM - Matt Niskanen (Wsh) registered two assists, four PIM and three hits during Friday's 4-3 shootout win against the Hurricanes.

11:52 PM - Matt Niskanen (Wsh) scored his first two goals of the season Tuesday, potting both in the third period (with one on the power play) in a 4-2 win over the Islanders.

10:23 AM - Matt Niskanen (Wsh) (upper body) will be a "full go" tonight, according to head coach Barry Trotz.

10:49 AM - Matt Niskanen (Wsh) (upper body) could suit up for Sunday's game against the Canucks depending on if he passes the NHL's concussion protocol, though he does not necessarily have a concussion, Isabelle Khurshudyan of the Washington Post reports.

9:49 AM - Matt Niskanen (Wsh) (upper body) will not travel with the team to Buffalo for their Friday matchup.

5:16 PM - Matt Niskanen (Wsh) (upper body) has been ruled out of the remainder of Wednesday's matchup with the Bruins, NHL.com's Tom Gulitti reports.

6:30 AM - Matt Niskanen (Wsh) (lower body) will play Thursday night against the Islanders, Isabelle Khurshudyan of The Washington Post reports.

12:09 PM - Matt Niskanen (Wsh) (lower body) is expected to suit up Thursday night against the visiting Islanders, Isabelle Khurshudyan of The Washington Post reports.

6:19 AM - Matt Niskanen (Wsh) (lower body) is day-to-day after leaving Saturday's game, Isabelle Khurshudyan of the Washington Post reports.

4:49 PM - Matt Niskanen (Wsh) left Saturday's matchup against the Maple Leafs with a lower-body injury and will not return, Isabelle Khurshudyan of the Washington Post reports.

6:35 PM - Matt Niskanen (Wsh) registered an assist and five shots on net during Friday's win over Chicago.

10:12 AM - Matt Niskanen (Wsh) recorded an assist and one shot in Saturday's 5-2 win over the Canucks.

9:35 AM - Matt Niskanen (Wsh) recorded an assist and one shot on goal in Wednesday's 4-1 loss to the Oilers.

9:30 PM - Matt Niskanen (Wsh) picked up two assists, a plus-2 rating, one shot and four blocks Thursday in Florida.

9:54 AM - Matt Niskanen (Wsh) picked up a helper in Saturday's 4-1 win over the Flyers.

8:33 AM - Matt Niskanen (Wsh) recorded five goals and 32 points in 82 games during the 2015-16 regular season.

7:01 PM - Matt Niskanen (Wsh) dished out a pair of assists in Monday's win over the Blue Jackets.

6:12 PM - Matt Niskanen (Wsh) scored the game-winning goal in overtime Saturday as the Capitals edged the Bruins 2-1.

8:23 PM - Matt Niskanen (Wsh) sniped the game-winning goal on the power play in Wednesday's 3-2 win over Toronto.

5:46 PM - Matt Niskanen (Wsh) tallied the game-winner in Tuesday's 3-2 victory over Pittsburgh.

11:01 AM - Matt Niskanen (Wsh) registered the game-winning goal in Sunday's win over the Flyers.

10:38 AM - Matt Niskanen (Wsh) has registered three points in his last three games, all power-play assists.

7:24 AM - Matt Niskanen (Wsh) has points in his last three games.

8:29 AM - Matt Niskanen (Wsh) picked up his third assist in as many games in Thursday's 3-2 win over Montreal.

7:46 PM - Matt Niskanen (Wsh) assisted on two goals in Thursday's 3-2 overtime win over the Red Wings.

7:41 AM - Matt Niskanen (Wsh) assisted on Nicklas Backstrom's second goal of the night during Tuesday's 6-2 win over Calgary.

9:02 AM - Matt Niskanen (Wsh) was in the lineup in Sunday's 6-2 win over the Islanders.

2:54 PM - Matt Niskanen (Wsh) defenseman Matt Niskanen scored a power play goal on Friday versus the Islanders.

6:49 PM - Matt Niskanen (Wsh) defenseman Matt Niskanen has been a fantasy disappointment in the first 10 games of the 2014-2015 season.

1:42 PM - Matt Niskanen (Wsh) Capitals defenseman Matt Niskanen had a career-year in his last season in Pittsburgh a year ago.

2:08 PM - Matt Niskanen (Wsh) of the reason Matt Niskanen decided to sign a seven-year, $40.25 million contract with the Capitals was the presence of head coach Barry Trotz.

5:51 AM - Matt Niskanen (Wsh) Niskanen knows that his new contract carries higher expectations and he feels he will be up for the challenge.

5:33 AM - Matt Niskanen (Wsh) assistant coach Todd Reirden had a lot to do with the team's signing of Matt Niskanen.

4:34 PM - Matt Niskanen (Wsh) Capitals have signed defenseman Matt Niskanen to a seven-year contract.