Joseph stopped 38 shots, including all 21 in the third period, and Jonas Hoglund scored the go-ahead power-play goal with 15:54 remaining as the Maple Leafs defeated the Philadelphia Flyers for the second time in six days, 2-1.
Joseph was busiest in the final period, but he made his best save in the second. With Toronto on the power play, Flyers left wing Paul Ranheim broke down the slot on a 2-on-1. But Joseph moved left and snatched Ranheim's wrist shot with his glove with 7:14 left.
"It was a 2-on-1 and I was playing a little bit deeper," Joseph said. "I thought that he wouldn't shoot the puck, but he did shoot it a bit later and I tried to read the play. I read it right, fortunately."
Just 30 seconds before Hoglund's game-winner, Philadelphia defenseman Luke Richardson rammed Darcy Tucker face-first into the boards. Domi tried to retaliate but was held back by linesman Kevin Collins. In the penalty box, Domi twice squirted water onto fans in the first two rows of seats.
One irate fan made an unsuccessful swipe at the Maple Leafs enforcer, then collapsed the Plexiglas and fell into the box, where he had to be separated from Domi by Collins and fellow linesman Jean Morin.
"That's my work. Nobody is going to come into my work," Domi said. "If he wants to come in here, he's going to have to pay the price. ... He leaned over and went through the glass. When he got in there, he started swinging. I'm not going to let anybody swing at me -- I don't care who it is."
"I saw the guy climb over," added Flyers right wing Rick Tocchet. "It was kind of comical for a while there."
Just 22 seconds after play resumed, Flyers center Kent Manderville was penalized for interference, putting Toronto on the power play. Hoglund slid a rebound of Mats Sundin's shot around goaltender Roman Cechmanek's right pad and inside the left goalpost for his 22nd goal of the season but just his second in 14 games.
Gary Roberts also scored on the power play for the Maple Leafs, who won for just the second time in their last nine trips to Philadelphia. Toronto solidified its hold on seventh place in the Eastern Conference while remaining three points behind sixth-place Pittsburgh.
"We're in a battle for a playoff spot ourselves," Sundin said. "We didn't have a good game last night at home (against Boston) and coming in we knew we had to play a good game to get any points out of here. We had a lot better effort from the whole team tonight and we were able to win the game. This was a very important two points for our team."
Defenseman Dan McGillis had the lone goal for Philadelphia, which is winless in its last four games (0-3-1-0). The loss all but ended the Flyers' pursuit of a second straight Atlantic Division title, leaving them 10 points behind first-place New Jersey with five games to play.
"We ended up with 21 shots in the third period and I give Joseph credit. He won part of the game for them," Philadelphia coach Bill Barber said. "I would have cherished a point for our guys to get rewarded. We've played short and we just came off a road trip. I just wished we could have gotten a point."
The Flyers struck first 8:12 into the opening period on McGillis' career-high 14th goal. He launched a one-timer from the blue line and caught Joseph leaning the wrong way, beating him inside the left goalpost.
That proved to be Joseph's only mistake. Early in the third period, he stopped Dean McAmmond's shot from the left side and got his right pad on rookie Ruslan Fedotenko's rebound. Less than a minute later, he came out to challenge Justin Williams.
"They threw a lot at the not, so you're into it right away," Joseph said. "They get the puck to the net and they get a lot of guys going to the net. You have to be careful with your rebounds and hope they go in the right spot."
That's just what happened in the opening minute as Toronto tied it on the power play. Cechmanek stopped Sundin's shot, but Roberts flipped in the rebound on his second try, tying Sundin for the team lead with his 28th goal.
The Maple Leafs improved to 12-15 in one-goal decisions while the Flyers fell to 11-10.
"We've always had hard games against Philly since I've been with Toronto," Toronto coach Pat Quinn said. "We approach each game knowing that there is a certain way the Flyers play and you have to at least show up. Our guys have done that over the past two seasons and that made for some good hockey."