It's hard to believe but Tim Thomas was a journeyman before he joined the Bruins. Bruins have had Bob Sense (think that's how it's spelled) as their goalie coach since 2003. It seems he is one of the best in the business.
Toronto traded Raask to the Bruins, they didn't see anything special in him. He was very good with Boston.
Ullmark went from being a good goalie on a bad team to a Vezina winner with an amazing record. He also stated in his first interview after being traded that he learned a lot from coach Bob.
Now Swayman has been really good. His entire development has been under coach Bob's watchful eye.
How likely is it that it's all luck? The one thing they all have in common is the goalie coach.
I would say that if anyone can help Korpi improve, it'll be that goalie coach. And let's not forget that Korpi had eye laser surgery in the off-season and now has a new mask. Maybe he did have sightline issues that affected his play, especially on perimeter shots. It wouldn't shock me if his play improves this season.
Just for fun...
Thomas actually put up pretty solid numbers previously, but he never got a shot in the NHL. As soon as he did, he ran with it and played pretty well. He wasn't a journeyman like Korpse with a 9 year NHL history.
I wouldn't agree that Toronto didn't see anything in Rask, they just made a poor decision to go after Raycroft and use Rask as the currency. Given how poorly Toronto was being managed at the time, I don't think them moving him for Raycroft means much.
Other than the Vezina season, Ullmark's stats have been pretty consistent from Buffalo to Boston. I think he's just a solid .915-920 type goaltender with the ability to go higher year to year.
Swayman is the real deal imo. He was good in the playoffs too as a young guy. I think he's just one of those guys, and if I were them, I'd bet on him.
One of the biggest red flags with Korpse's resume imo, beyond the subpar stats in general, is that basically every year he was in CBJ, his goaltending partner(s) were putting up .010-.030 higher save percentage behind the same team. I just don't see it, but like many NHL goalies, I think he has the ability to put it together in spurts. I've probably hammered that enough, but that's my opinion.