Transactions & Injuries
          
            
  
    
          
              
    | Date | Description | |
|---|---|---|
| 2024-25 | ||
| 2025-03-28 | 
                          
                 
              
            
                          Missed 1 game (personal reasons).
                       | 
                  |
| 2025-03-26 | 
                          
                 
              
            
                          Personal reasons, day-to-day.
                       | 
                  |
| 2024-11-30 | 
                          
                 
              
            
                          Fined $5,000 by the NHL. 
                       | 
                  |
| 2024-07-01 | 
                          
                 
              
            
                          Signed as an unrestricted free agent by the Boston Bruins to a six-year contract.
                       | 
                  |
| 2023-24 | ||
| 2024-05-13 | 
                          
                 
              
            
                          Fined $5,000 by the NHL. 
                       | 
                  |
| 2024-02-14 | 
                          
                 
              
            
                          Missed 2 games (suspended by nhl).
                       | 
                  |
| 2024-02-10 | 
                          
                 
              
            
                          Suspended by the NHL for 2 games.
                       | 
                  |
| 2024-01-08 | 
                          
                 
              
            
                          Missed 1 game (undisclosed).
                       | 
                  |
| 2024-01-06 | 
                          
                 
              
            
                          Undisclosed, day-to-day.
                       | 
                  |
| 2023-11-30 | 
                          
                 
              
            
                          
                Acquired from the Calgary Flames
              
                       | 
                      The Vancouver Canucks acquired defenseman Nikita Zadorov from the Calgary Flames for a conditional fifth-round draft pick in 2024 and a third-round draft pick in 2026. | 
| 2023-11-04 | 
                          
                 
              
            
                          Missed 1 game (personal reasons).
                       | 
                  |
| 2023-11-01 | 
                          
                 
              
            
                          Personal reasons, day-to-day.
                       | 
                  |
| 2022-23 | ||
| 2022-07-13 | 
                          
                 
              
            
                          Re-signed as an unrestricted free agent by the Calgary Flames to a two-year contract.
                       | 
                  |
| 2021-22 | ||
| 2022-04-09 | 
                          
                 
              
            
                          Missed 1 game (illness).
                       | 
                  |
| 2022-04-07 | 
                          
                 
              
            
                          Illness, day-to-day.
                       | 
                  |
| 2021-12-26 | 
                          
                 
              
            
                          Activated from the COVID-19 list by the Calgary Flames.
                       | 
                  |
| 2021-12-13 | 
                          
                 
              
            
                          COVID-19, day-to-day.
                       | 
                  |
| 2021-08-20 | 
                          
                 
              
            
                          Re-signed as a restricted free agent by the Calgary Flames to a one-year contract.
                       | 
                  |
| 2021-07-28 | 
                          
                 
              
            
                          
                Acquired from the Chicago Blackhawks
              
                       | 
                      The Calgary Flames acquired defenseman Nikita Zadorov from the Chicago Blackhawks for a third-round draft pick in 2022. | 
| 2020-21 | ||
| 2021-07-26 | 
                          
                 
              
            
                          Chicago Blackhawks tendered a qualifying offer.
                       | 
                  |
| 2020-10-10 | 
                          
                 
              
            
                          
                Acquired from the Colorado Avalanche
              
                       | 
                      The Colorado Avalanche acquired winger Brandon Saad and defenseman Dennis Gilbert from the Chicago Blackhawks for defensemen Nikita Zadorov and Anton Lindholm. | 
| 2020-10-10 | 
                          
                 
              
            
                          Re-signed as a restricted free agent by the Chicago Blackhawks to a one-year contract.
                       | 
                  |
| 2019-20 | ||
| 2020-10-07 | 
                          
                 
              
            
                          Colorado Avalanche tendered a qualifying offer.
                       | 
                  |
| 2019-11-16 | 
                          
                 
              
            
                          Missed 3 games (broken jaw).
                       | 
                  |
| 2019-11-09 | 
                          
                 
              
            
                          Broken jaw, injured reserve.
                       | 
                  |
| 2019-07-05 | 
                          
                 
              
            
                          Re-signed as a restricted free agent by the Colorado Avalanche to a one-year contract.
                       | 
                  |
| 2018-19 | ||
| 2019-06-25 | 
                          
                 
              
            
                          Colorado Avalanche tendered a qualifying offer.
                       | 
                  |
| 2019-03-09 | 
                          
                 
              
            
                          Missed 1 game (upper body injury).
                       | 
                  |
| 2019-03-06 | 
                          
                 
              
            
                          Upper body injury, day-to-day.
                       | 
                  |
| 2019-01-14 | 
                          
                 
              
            
                          Missed 10 games (lower body injury).
                       | 
                  |
| 2018-12-20 | 
                          
                 
              
            
                          Lower body injury, day-to-day.
                       | 
                  |
| 2017-18 | ||
| 2017-09-15 | 
                          
                 
              
            
                          Re-signed as a restricted free agent by the Colorado Avalanche to a two-year contract.
                       | 
                  |
| 2016-17 | ||
| 2017-06-26 | 
                          
                 
              
            
                          Colorado Avalanche tendered a qualifying offer.
                       | 
                  |
| 2017-04-09 | 
                          
                 
              
            
                          Missed the last 25 regular season games (fractured ankle).
                       | 
                  |
| 2017-02-25 | 
                          
                 
              
            
                          Fractured ankle, injured reserve.
                       | 
                  |
| 2017-02-20 | 
                          
                 
              
            
                          Fractured ankle, remainder of the regular season.
                       | 
                  |
| 2015-16 | ||
| 2016-04-05 | 
                          
                 
              
            
                          Missed 1 game (concussion).
                       | 
                  |
| 2016-04-02 | 
                          
                 
              
            
                          Concussion, sidelined indefinitely.
                       | 
                  |
| 2016-03-27 | 
                          
                 
              
            
                          Recalled from the San Antonio Rampage (AHL).
                       | 
                  |
| 2016-01-23 | 
                          
                 
              
            
                          Assigned to the San Antonio Rampage (AHL).
                       | 
                  |
| 2016-01-13 | 
                          
                 
              
            
                          Recalled from the San Antonio Rampage (AHL).
                       | 
                  |
| 2015-11-07 | 
                          
                 
              
            
                          Assigned to the San Antonio Rampage (AHL).
                       | 
                  |
| 2014-15 | ||
| 2015-06-26 | 
                          
                 
              
            
                          
                Acquired from the Buffalo Sabres.
              
                       | 
                      The Buffalo Sabres acquired center Ryan O'Reilly and winger Jamie McGinn from the Colorado Avalanche for defenseman Nikita Zadorov, forwards Mikhail Grigorenko and J.T. Compher as well as a second-round draft pick in 2015 (No. 31 overall). | 
| 2015-02-28 | 
                          
                 
              
            
                          Missed 3 games (disciplinary).
                       | 
                  |
| 2015-02-22 | 
                          
                 
              
            
                          Disciplinary, day-to-day.
                       | 
                  |
| 2015-01-28 | 
                          
                 
              
            
                          Missed 1 game (suspended by team).
                       | 
                  |
| 2015-01-26 | 
                          
                 
              
            
                          Suspended by the Buffalo Sabres indefinitely.
                       | 
                  |
| 2013-14 | ||
| 2013-11-19 | 
                          
                 
              
            
                          Returned to his junior team (London Knights-OHL).
                       | 
                  |
| 2013-10-19 | 
                          
                 
              
            
                          Missed 9 games (finger injury).
                       | 
                  |
| 2013-10-01 | 
                          
                 
              
            
                          Finger injury, injured reserve.
                       | 
                  |
| 2013-09-25 | 
                          
                 
              
            
                          Signed by the Buffalo Sabres to a three-year entry-level contract.
                       | 
                  |
| 2012-13 | ||
| 2013-06-30 | 
                          
                 
              
            
                          Drafted by the Buffalo Sabres in the 1st round (16th overall) in 2013.
                       | 
                  |