I think the rep of disappearing in critical playoff games is true to an extent (same knock applies to Matthews), but I also believe he has turned a corner. Most recent example is how well he performed in the finals of the 4 Nations.I live in Toronto and watched Marner since he came into the league. Marner is a great player who makes everyone around him better. Hes also a very good 200ft player and plays in every situatuon. The knock on Marner is that when the playoffs come and the time and space get harder, Marner disappears. His playoff numbers will show different (he has decent playoff numbers with 50pts in 57 games) but thats why numbers dont always tell the story. Marners numbers from game 4 and beyond in previous series would seem to be non existed with his play during those crucial later games . Marner been the whipping boy for Toronto loses in the last few years,
My sway is that the disappearing act is more a team problem than a Marner problem. Marner just gets the glory of being the fans whipping boy when things go wrong. Interestingly, roughly 5 or so years ago, Matthews held that role with the majority of Toronto fans claiming Marner was better than Matthews. Funny how it has changed in recent years.
In critical games where the series is on the line, Marner does seem more fitted to be a key facilitator (almost like a #2 or sidekick) rather than a game breaker, though.