It's worth noting that he hasn't been himself since Game 4 of the series, a game he had otherwise dominated against the Oilers. While his teammates played well in front of him, he's been shaky since the 8-1 blowout in Game 4.
This update dismisses any injury doubts and confirms that Bob will be in the net. However, Maurice's explanation about "routine" is puzzling, as Bobrovsky had not missed any practice until Sunday.
Another possible explanation is that Sergei has been shielded from the intense media pressure, as he hasn't spoken to journalists in recent days. After a run of success, losing three consecutive games must be unsettling for any goalie, especially when the most significant victory of his career is at stake.
He will need to deliver an exceptional performance tonight if he hopes to stop Connor McDavid, Leon Draisaitl, and the rest of the Oilers to lift the Stanley Cup.