The loss to the Senators extended a three-week funk in which Toronto is 3-5-2, outscored 44-33. Seven of those 10 games came against opponents who have been eliminated from playoff contention (Senators twice, Philadelphia Flyers twice, Buffalo Sabres, New York Rangers, Florida Panthers).
"We just can't give up the opportunities and especially to the middle of the ice that make it tough on our goaltenders," Tavares said. "It's obviously hard to explain, it's just the attention to detail each and every shift. "It's hard to do and you're competing against other teams that are trying to implement what they're trying to do."
It was particularly difficult during the one-sided defeat on Long Island last month. Toronto opened the scoring in the first period, then allowed the next six goals.
The win was sweet for the capacity crowd, which spent the majority of the evening mocking Tavares by booing, waving rubber snakes and driving over his jersey in the parking lots outside.
His Maple Leafs' teammates felt they let Tavares down.
"We were embarrassed the last time we were there, and we know that," forward Zach Hyman said. "We want to win this game for John. He played there for so long. It means a lot to him. He's been such a great teammate for us. He's such a big part of our team that you want to help your teammate out and that's a big one for him, emotionally for sure.
"When we went there the first time they didn't treat him like a guy who played there for as long as he did and did so many things for those fans. But we're happy he's here, he's a huge part of our team, he's made the transition seamlessly and is having an unbelievable season. It would be a great feeling to get that one for him."