Tavares' brainfart gave the Sens a tiny bit of life. That was a God-awful play on his part. The Leafs are up 5-1 with 9 seconds left in the period and on the PP. It was practically game over. Then Tavares makes a nicer pass to Watson than he's probably made in a few games to his own teammates, Paul bangs home the rebound, and suddenly the Leafs only have a 3 goal lead and lost a bit of the momentum.
There was literally zero reason for Tavares to do what he did. Zero. He wasn't under any real pressure, he could have simply held onto the puck if he didn't have a proper outlet. Nine seconds left, full control of the puck, and he gave the Sens life.
But no, Andersen was the bigger culprit, like every single time the Leafs lose, right?