Today I want to share with you some observations about the success of some teams in relation to players who have left during the season. Most of the players are present in almost all games of their team in active roles, but sometimes players transfer to other teams. I tried to evaluate such cases and find out how the team's performance changed after that. To assess the quality of games, I took the usual winrate - the proportion of victories to the total number of matches played.
So, with a limit of 20+ matches with a player and 20+ matches after his exit:
On the contrary, for the Philadelphia Flyers team, with the departure of the players Mikhail Vorobyev (22 matches) and Chris Stewart (21 matches), the winrate has grown from 47-48% to 69% (for the remaining 42 and 39 matches).
With a decrease in the limit on the number of matches with a player and after his departure to 10:
The Los Angeles Kings increased winrate after the departure of a number of players:
And, on the contrary, for the Pittsburgh Penguins, the departure of players was unsuccessful, the winrate fell:
And for Washington Capitals: