Sabres fans all seem to think it was this fight with Hathaway that somehow broke Cozens and he's been passive and ineffective ever since being ragdolled a bit here.
https://www.sportsnet.ca/nhl/video/s...oss-to-flyers/
And they might be on to something...he had 7 points in the first 11 games that season which wasnt that bad but has been considerably worse since.
Pre-fight: 75 points in 95 games, 0.79 p/gp, 50.1% xGF at 5v5, 1.24 relative, 9.91% on ice shooting
Post-fight: 66 points in 121 games, 0.55 p/gp, 48.3% xGF at 5v5, -0.07 relative, 8.44% on ice shooting