The Vegas Golden Knights have traded forward David Clarkson and a 2020 fourth-round pick to the Toronto Maple Leafs in exchange for goaltender Garret Sparks, the teams announced Tuesday.

Clarkson hasn't played since 2015-16 due to a career-ending back injury. He has one year remaining on his contract, which carries a $5.25-million cap hit. The 35-year-old can be placed on long-term injured reserve, and therefore won't count against the salary cap.

More to come.

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The Nashville Predators and restricted free-agent forward Colton Sissons have avoided arbitration by agreeing to a seven-year, $20-million contract, the team announced on Tuesday.

The deal carries an average annual value of about $2.85 million.

Sissons, who was scheduled for arbitration on July 26, becomes the 21st player this summer to settle a deal before their meeting date.

The 25-year-old tallied a career-high 15 goals and 30 points in 75 games for the Predators last season.

Nashville's 50th overall pick at the 2012 NHL Draft, Sissons has recorded 37 goals and 77 points in 265 career contests.

Long-term contracts with low average annual values are rare in the NHL, but this isn't the first time Predators general manager David Poile has signed a player to such a deal. In 2016, he inked forward Calle Jarnkrok to a six-year, $12-million pact.

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John Tavares still isn't over how his first season with the Toronto Maple Leafs ended.

The Leafs held a 3-2 series lead over the Boston Bruins in the first round of the Stanley Cup Playoffs but were unable to close out the series on home ice in Game 6. Then, Toronto was unable to conquer its Game 7 demons in Boston.

"I'm still bitter," Tavares said Friday, according to NHL.com's Mike Zeisberger. "We were up 3-2 in that series. We thought we were in the driver's seat and we just didn't find a way to put the nail in the coffin ... to really finish them off. It's something we have to learn from."

The Bruins made it all the way to the Stanley Cup Final. Their path through the Eastern Conference was easier than expected after the Tampa Bay Lightning, Washington Capitals, and Pittsburgh Penguins all lost in the first round.

Tavares enjoyed a career year in 2018-19, tallying 47 goals and 88 points in 82 games. He added two goals and three assists in seven playoff tilts. The Toronto native, who inked a seven-year, $77-million contract with the Leafs last summer, will look to help his boyhood team win its first playoff series since 2004 come next spring.

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The City of Calgary, Calgary Sports and Entertainment Corporation, and the Calgary Exhibition and Stampede Limited have agreed to fundamental terms and conditions for the development and construction of a new public sports and entertainment event center, according to the city's press release.

The event center would serve as a new home for the Flames, who've played at the Scotiabank Saddledome since 1983. The Saddledome is the third-oldest building in the league, behind Madison Square Garden and Nassau Coliseum.

The estimated cost of the event center is $550 million, which will be split 50/50 between the city and the team. The city will own 100 percent of the event center. The team will bear 100 percent of the operating, maintenance, and repair costs for the duration of the 35-year agreement.

Here's a look at an artist's conceptual rendering of the project:

The event center would be located adjacent to the downtown core in East Victoria Park.

The agreement is subject to a vote of Calgary's city council on July 29, a seven-day public comment period, and customary approvals by the CSEC and the Stampede.

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At this past weekend's TeamSnap Hockey Coaches Conference in Toronto, theScore chatted with a group of high-level coaches to gain some insight into their profession as it evolves alongside the sport itself.

The participants:

• Pete DeBoer, San Jose Sharks head coach (NHL)
• Rikard Gronborg, ZSC Lions head coach (Switzerland)
• Greg Powers, Arizona State head coach (NCAA)
• Todd Woodcroft, Winnipeg Jets assistant coach (NHL)
• Mike Kelly, Vegas Golden Knights assistant coach (NHL)
• Reid Cashman, Washington Capitals assistant coach (NHL)

The conversations, lightly edited for brevity and clarity, were held individually and compiled to form the discussion below.

What’s the No. 1 challenge facing today's high-level coaches?

DeBoer: "I honestly believe the biggest challenge for all of us going forward is analytics, and what role analytics is going to play and what we're doing at ground level. They're important, but to what extent? How much are you using them? How much is overuse? How much do the players want, without overextending it?

"A version of analytics has been around since probably (legendary Canadiens coach) Toe Blake tracked scoring chances against or odd-man rushes. Coaches have been doing that forever. Now we’ve got this pile of information on every play that happens in a game, and there’s some important, valuable information in there, but it’s all about how you filter through that and what you give to the players. For every yin, there’s a yang. If you’re good in one area, you’re going to give up something in another area."

Gronborg: "Doing the daily work and believing in something that you set out to achieve. There's going to be a lot of push and pull out there, a lot of influences that want to get in there. If you really believe in what you're doing, really believe in waking up in the morning and taking on the challenges, I think you're in good shape, no matter what level you're at. The coaches of the Toronto Maple Leafs - (Mike) Babcock and the rest of the coaches - can attest. There's a lot of pressure in a lot of different situations. How do you handle that? You do the daily work and believe in what you're doing, and make everyone in the locker room believe in the daily work as well."

Cashman: "I think the No. 1 challenge is getting your players to trust you - and I say that in a positive way ... If you don’t get a player who believes you'll be able to maximize his abilities, I think you're going to have a tough time coaching him.

"For me, as a (defense) corps, we’re all going to be connected, and then individually you and I will figure out the best way to maximize your abilities. What does that mean? Well, do you need extra work before practice? Do you like to be in the weight room before practice? Is there stuff going on at home? As a university coach, how are classes going? Can I help you with classes? And now you trust me because you know that I want to help you as a human being, and then as a hockey player."

Woodcroft: "I'll back up to my first year in the NHL, in 2000. Seeing the evolution of the voice that the players have now. It has evolved from authoritative - well, authoritative is not the right word, but it wasn’t really a democracy before. The players would do what the coaches told them to do, and they would often do it without asking questions and understanding why. Now, the players are in partnership with the coaches. The best coaches, I think, are the ones that have the idea that they're managers also, and that the 23 guys on your roster are people too. They have lives outside hockey.

"Society now, with social media and the pressures these guys have - I could have scored that goal, I could have made that save, why was this guy on the ice, what the hell is wrong with this power play - everyone has an opinion. That sometimes bleeds into the players’ lives and influences players. Our job as coaches is to manage expectations and manage the notion that we’re a team and that the team is insular."

Powers: "Oof. That’s a loaded question. I think, especially for older coaches, it’s understanding that you’ve got to coach guys differently today. You can't just blanket-treat players anymore. You have to get to know them. What makes each individual player tick? Everybody's motivated in a different way. With all the distraction - social media, technology - you almost have to peel back the onion more to really get to know what makes a kid go. It's an ongoing process for me."

How does your organization manage analytics and team culture? What’s the optimal fit?

Gronborg: "I call it the 'package.' Every day, when a player shows up, we give him a (verbally communicated) package. Some packages have statistics and analytics in them, but mostly it's going to be about what we're doing on the ice. You shouldn't burden them too much with analytics. At the same time, I like to take those numbers and say, 'We're really successful here. We're not so successful here, so let’s change that.' That’s information. As coaches, one thing we need to do is boil everything down."

Kelly: "(In Vegas), we have a guy who works in the analytics department who's played at the college level - Dustin Walsh. He does a really good job at giving (the coaching staff) meaningful data. He'll ask us what we want, and we'll ask for a basic outline back. So he'll give us about three-to-four pages of information before the game and then after the game.

"It's funny. His numbers align really well with how we saw the game, and so it's good that after we come back the next day we have the report. It’s sitting there, and you can go, 'Yeah, I was right. This is what I saw.' Sometimes it's not the same, but there could be reasons for it. Or, there might be a number there that doesn’t really reflect what happened accurately. But I’d say 95 percent of the time they're right on."

Woodcroft: "For myself, it's an easy answer ... If you're neglecting something (like analytics) - whether you don't understand it, or you think it's silly, or whatever - you’re probably doing your team a disservice.

"(Winnipeg coach) Paul Maurice is a master of using analytics as a narrative, as a way to weave through the team we're going to play and how we're playing. We focus a lot on how we play, and we'll use analytics accordingly. I think analytics is not just the recent thing, I think it’s the future as well.

"If you have money to spend outside the (player salary) cap, it’s going to make your team better. Teams that have huge financial war chests will have an advantage, being able to put a ton of resources into analytics. Teams that maybe don’t have the luxury of spending all of that money on it, I think down the road will probably suffer. You saw in the '80s. (There were) teams that didn't have goalie coaches, video coaches, and strength coaches, and then they understood it was the wave of the future and started hiring these guys full time. Now teams have two goalie coaches, two video coaches, three or four strength coaches. There's no cap off the ice. The best teams spend smartly outside the cap, whether it's player development, or the best things your team can eat, or sleep doctors."

What do you think is, or will be, the next tactical trend in coaching circles? Example: Five forwards on a power-play unit.

Gronborg: "I’m looking more at the complete game and involving all players in all situations. Yeah, you have defensemen and forwards, you have centers out there, whatever, but it's a free-flowing game, so why not involve them all?

"Everyone is so tight, everyone is so scouted nowadays. Let’s switch it up a little bit, let’s challenge the norms a little bit by making movements and formations nobody's used to.

"They're so used to 'left defenseman,' 'right defenseman' and playing a certain position. It's pretty easy to defend that. But what happens if you spread out, what happens if you go in patterns they're not used to? A little bit of positionless hockey, especially in the offensive zone (could be the trend)."

Cashman: "I think defensemen need to become more involved in the offensive zone. With how teams defend so low (in the zone), smothering five guys low, the open ice is up high. I think you need to teach defensemen to take advantage of that open ice, and not just get a puck, roll your head, and shoot it. Take it, attack that open ice, and create options.

"We preach options (in Washington). Put yourself in a position to have multiple options. If the (point) shot is there and the best option, take the shot. But if it’s not and there’s a bunch of open ice, take it instead."

Powers: "Generally, the best coaches have always been the best thieves, right? There's no need to reinvent the game. I think the game is simple.

"Obviously, you always look at NHL games and watch special teams. The drop (pass) on the (power-play) breakout was really hot for a while - kinda slowing it down and changing sides - but (penalty kills) are so advanced now that forecheckers have figured that out. Now, coming up with speed is almost coming back (into the mainstream) ... I think that coaching is so advanced, and players are so prepared now because of it, that you almost have to have different plans ready. Maybe two units that do two completely different things and both are prepared to flip-flop to what the other is doing."

If you had a hockey-playing 10-year-old son or daughter, would you encourage playing other sports in the summer months or double down on hockey? Is 10 too young for specialization?

Cashman: "A 10-year-old? I do not think they should be specializing. If my daughter wants to do one camp in the summer where she gets on the ice because she loves hockey, yeah, I think you can do a camp. I think it's crazy when 10-year-olds are chasing tournaments all over North America in the summertime and playing 100 games in a calendar year. They're not practicing, they’re not developing other skills as an athlete. To be the best athlete you can be, you need to maximize your athleticism. And to do that you need to play multiple sports."

Kelly: "I think, in a perfect world, people would play a number of different sports. But we don't live in a perfect world anymore. It depends on how seriously they want to be about a sport. If they just kinda like a sport, go out and play as many sports as you can. Unfortunately, it's gotten to the point where competitive hockey players - just like competitive ball players, competitive soccer players - are playing hockey 12 months a year, or 11 months a year. So, if you want to keep up, that's what you have to do. I don't have to agree with it, but it is what it is. We live in a different world. Just because we did it one way doesn’t mean it's the be-all, end-all."

Powers: "100 percent other sports … You want athletes that know how to compete, not robots. I think the hockey community is now trying to produce these robotic players that are machines. I think there's something to be said for creativity and compete. The best way to develop that is to play other sports."

Woodcroft: "Certain games are invasion games. Hockey is an invasion game. So I think people who play soccer have an excellent advantage crossing over. Plus, you talk about learning to solve problems spatially in different sports. In basketball: boxing out. Soccer: creating two-on-ones. And, with athleticism, it's not just sports. Climb a tree, swim, be athletic. If you're an 8-year-old, 9-year-old, 13-year-old, your body is still developing. Learn. Go to gymnastics, or try out parkour."

John Matisz is theScore's national hockey writer.

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