It is the summer and with no games being played at the moment it is awfully difficult to rank the NHL’s 31 teams on a weekly basis. So the PHT Power Rankings will spend the next month taking a look back at some of the best (and worst) developments in the NHL, both past and present. Best trades. Worst trades. Best all-time teams. Any other random things we feel like ranking. This week we look step into the present and look at the best trades that have been made (so far) this summer.

The two big trades we all expected to happen at this point this summer were Erik Karlsson and Max Pacioretty. To this point neither one has happened and it seems increasingly likely neither one will happen before the start of the season. Even though we are still waiting on the two blockbuster trades, there were still some big names changing teams this summer, some of which will make a huge impact for their new teams.

Today we take a look at the 10 trades from this summer (so far) that might help their new teams the most.

1. Carolina gets Dougie Hamilton. Of all the players to get traded this offseason (so far) none of them have the potential to make a greater impact than Hamilton. He may not be Erik Karlsson, but he is still an outstanding player.

At age 25 he is in the middle of what should be his peak years in the NHL, he is already a legitimate top-pairing defenseman, and he is still signed for another three seasons at what is probably a steal of a salary cap hit ($5.75 million per season). He is coming off of a 2017-18 season in Calgary where he led all defenseman in goals with 17 and was one of the best possession players in the league, finishing with a 57 percent shot attempt share. Given the makeup of the Hurricanes roster it was a little surprising to see them add to the defense (probably already their strength) but when you have an opportunity to add impact talent you can’t really pass that up. Elias Lindholm and Noah Hanifin are good players, but neither one is likely to ever make the impact that Hamilton does and will continue to make. With Carolina still holding on to Justin Faulk its defense has the potential to be outstanding over the next few years with him, Hamilton, Jaccob Slavin, Brett Pesce, Trevor van Riemsdyk, Haydn Fleury, and free agent addition Calvin de Haan.

An underrated part of this deal for Carolina: It also got Micheal Ferland and prospect Adam Fox as part of the package. Ferland was just as productive as Lindholm this past season and for a cheaper price. He will be in line for a new contract after this season, but it’s a strong trade all around for Carolina.

[Related: Hurricanes acquire Hamilton from Flames]

2. St. Louis gets Ryan O'Reilly. This trade raised some eyebrows simply due to the number of assets the Blues gave up, shipping Tage Thompson, Patrik Berglund, Vladimir Sobotka, and a couple of draft picks to the Sabres. It was definitely a lot to give up for one player. But what if that one player offers more value than the sum of the parts you gave up? Thompson is an intriguing young player, and the draft picks are a couple of lottery tickets that may or may not amount to anything. Beyond that, Sobotka and Berglund probably had contracts the Blues were looking to jettison. There is a lot of value in a 60-point center that plays the defensive game O’Reilly plays without taking penalties.

3. Buffalo gets Jeff Skinner. After years of rumors and speculation the Carolina Hurricanes finally went through with the Jeff Skinner trade and the return was … underwhelming. Skinner’s no-trade clause and ability to choose where he went no doubt handcuffed the Hurricanes in this situation, but in terms of talent-for-talent it is not a great exchange for them.

Cliff Pu is an intriguing prospect and they added three future draft picks to their cupboard (giving them 18 over the next two years). Still, this is a big win for Buffalo, even if Skinner doesn’t re-sign before being eligible for unrestricted free agency after this season. He is one of the better goal-scorers in the league, and while there always seems to be some kind of concern about his health (he has had some concussion issues in the past) he has only missed 19 games over the past five seasons (and only eight over the past four). During that same stretch he is 16th in the league in goals scored, giving Buffalo some much-needed goal-scoring punch on the wing.

Even if the Sabres end up being lousy again and they can’t get Skinner to re-sign they can easily flip him at the deadline and get back some of the draft pick capital they gave up in the original trade.

4. Colorado gets Philipp Grubauer. Having Grubauer this high on the list is all about potential, because if he ends up being the player he showed that he can be in his limited time with the Washington Capitals he could be a massive addition both in the short-and long-term.

Goalies can be difficult to project, especially when they have such a limited NHL track record, but among goalies that have appeared in at least 50 games over the past three seasons only two (Antti Raanta at .926 and John Gibson at .924) have a higher save percentage than .923 mark Grubauer produced.

He has, at the very least, earned the opportunity to be a full-time starter to see what he can do and it was never going to happen in Washington with Braden Holtby already in place. The Avalanche only had to give up a second-round and take on the final year of Brooks Orpik‘s contract (which they promptly bought out) to get him. Combined with Grubauer’s new contract and the buyout hit from Orpik’s deal that’s a $14 million investment over the next three years and a second-round pick. If Grubauer becomes the player the Avalanche think he can, be that is a tremendous trade.

5. Arizona gets Alex Galchenyuk. Galchenyuk gets a chance for a fresh start on a new team that might actually trust him a little bit more and give him an opportunity to excel at center. Along with Derek Stepan and (maybe, hopefully) Dylan Strome, the Coyotes will have a pretty intriguing look down the middle that should give them a chance to compete.

To land Galchenyuk they had to give up Max Domi, whose 18 goals over the past two seasons were less than Galchenyuk scored just this past season.

Given his previous production, skill level, and his underlying numbers from a year ago there is very good reason to believe Galchenyuk can once again be a 30-goal scorer in the NHL, perhaps even as soon as this season. He is only a few months older than Domi and their cap hits are similar. Put it all together and this has the potential to be a strong one-for-one trade for the Coyotes.

[Related: Six teams that improved the most this summer]

6. Florida gets Mike Hoffman. Hoffman is a producitve player and still signed for two more years at a fair price. He is a steady 20-goal, 55-to 60-point player and under normal circumstances would either still be in Ottawa or have been traded for a significantly better return. These were not normal circumstances as the Senators have devolved into the most dysfunctional organization in the league, with Hoffman and his fiancee being at the center of some of it. As a result, he ended up getting traded twice this offseason harassment allegations against his fiancee. Senators general manager Pierre Dorion addressed the trade and said their locker room was “broken.” It was clearly a bad situation beyond repair.

7. Buffalo gets Conor Sheary. Buffalo ended up getting Sheary and defenseman Matt Hunwick in what was strictly a salary dump trade for the Pittsburgh Penguins. All it cost Buffalo was a conditional fourth-round pick in 2019 and some future salary commitments to Sheary and Hunwick. Sheary is the intriguing one here because even after three years in the NHL we are still not really sure what he is. A lot of his success in Pittsburgh was almost certainly the result of playing alongside Sidney Crosby, and when he is not putting the puck in the net there is not much else that he does to provide value. You can live with a player like that if they score 30 or 40 goals. Sheary is not that type of player, though. Still, given the cost Buffalo had to give up (very little) and the fact it had the salary cap space to take on the two contracts it is an okay gamble for a team that needs an influx of talented players.

8. Ottawa gets Mikkel Boedker. This was the main part of Ottawa’s return for Hoffman when it dealt him to the San Jose Sharks. Along with Boedker, the Senators also picked up a prospect and a sixth-round draft pick. Given the off-ice situation it’s not a surprise that the Senators did not get full value for Hoffman in return, but it looks even worse when the Sharks were able to turn around and deal Hoffman later that same day to the Florida Panthers — a team in Ottawa’s division — for what was probably better return than the Senators received.

9. New York Islanders get Matt Martin. Martin was a popular player in his first stop with the Islanders as a part of their physical fourth line, but his return in a trade from the Toronto Maple Leafs does not make much sense. Just another fourth-liner with a multi-year contract being added to a team that already has a lot of fourth-liners on multi-year contracts. The optics of it are especially bad when it came just days after the Maple Leafs signed John Tavares away from the Islanders in free agency and the trade simply helping the Maple Leafs create some additional salary cap space.

10. Chicago dumps Marian Hossa‘s contract. Honestly I’m not really sure who the real winner here is but it was a pretty big trade just for the salary cap ramifications and the names involved.

Arizona was once again the dumping ground for a contract another NHL team didn’t want, this time taking on the remainder of Marian Hossa’s deal. Arizona picked up Vinnie Hinostroza to add some depth to its forward group, while Chicago ended up getting back Marcus Kruger and no longer has to worry about Hossa’s $5.25 million salary cap hit over the next three seasons. I still wonder if maybe Arizona could have done better in this deal in exchange for taking on Hossa’s contract (it is not like Chicago had many other options or teams that would be willing or able to take on that deal) but the Hinostroza for Kruger swap is probably a plus for them.

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Adam Gretz is a writer for Pro Hockey Talk on NBC Sports. Drop him a line at phtblog@nbcsports.com or follow him on Twitter @AGretz.