Originally, it appeared as though Nylander would miss tonight's game against Los Angeles, but following practice on Wednesday, Berube had informed the media in Toronto that Nylander would be a game-time decision. After taking warm-ups, Nylander was cleared to return, leading to Pacioretty coming out of the lineup.
Pacioretty has dealt with multiple significant injuries in recent seasons, missing an enormous amount of time while recovering from back-to-back Achilles injuries. The soon to be 36-year-old has played in all 3 games for the Maple Leafs thus far, so perhaps the Leafs taking him out of the lineup as opposed to someone else is more about controlling his workload than anything else.
It's doubtful that Pacioretty coming out of the lineup has anything to do with the organization being displeased with his play. The former Canadiens captain has notched 1 goal across his 3 appearances this season and has been a welcome addition to a team who has had a longstanding need for depth scoring. I'd imagine he'll be right back in the lineup this weekend, but we'll have to see how things look as the week progresses.