Jeff Skinner is officially on watch.

In the months leading up to the 2010 NHL Draft, the big question was whether Taylor Hall or Tyler Seguin would be selected first overall, with both players seen as legitimate building blocks for either of the two teams slotted to make the first two selections.

Six years later, both Hall and Seguin find themselves on different teams, as both have since been traded by the Edmonton Oilers and Boston Bruins respectively and under the watch of general manager Peter Chiarelli.

Related: Oilers trade Hall to Devils for Larsson

And they're not alone.

Hall is the sixth of 2010's top six picks to be traded, leaving Skinner - who was selected seventh by the Carolina Hurricanes - left to wonder if and when he'll complete this particular group of seven.

Here's a look at the six trades in question in reverse order.

6. Brett Connolly, Tampa Bay Lightning

March 2, 2015 - Traded to the Bruins for a 2015 second-round pick and a 2016 second-round pick.

Months prior to being let go by the Bruins and desperate to add offense to a sputtering roster, Chiarelli pulled off a deal with the Tampa Bay Lightning that saw Steve Yzerman give up on the player he selected with his first lottery pick as GM.

Brett Connolly scored only nine goals in 76 games for the Bruins, and new GM Don Sweeney recently decided not to sign him to a qualifying offer, allowing him to become an unrestricted free agent.

5. Nino Niederreiter, New York Islanders

June 30, 2013 - Traded to the Minnesota Wild for Cal Clutterbuck and a 2013 third-round pick

Unhappy with his place within the New York Islanders organization, Nino Niederreiter reportedly asked for a trade after spending the majority of the 2012-13 season in the AHL.

The Wild jumped at the opportunity, sending hard-hitting depth forward Clutterbuck the other way.

Niederreiter recorded a career-high 43 points this past season and is proving to be a reliable and capable two-way forward for the Wild.

4. Ryan Johansen, Columbus Blue Jackets

January 6, 2016 - Traded to the Nashville Predators for Seth Jones

This trade was a seemingly rare win-win deal for both clubs, with the Predators adding a long-sought after top-line center and the Columbus Blue Jackets receiving a bona fide top-pairing defenseman in return.

Incidentally, it was the first of two important trades made by GM David Poile this year.

3. Erik Gudbranson, Florida Panthers

May 25, 2016 - Traded to the Vancouver Canucks along with a 2016 fifth-round pick for Jared McCann and a 2016 second-round pick and a 2016 fourth-round pick.

Canucks GM Jim Benning was looking to beef up his defense corps and sent a 2014 first-round pick (24th overall) in McCann to the Florida Panthers for the heavy-hitting, shot-blocking Erik Gudbranson.

Benning was part of Boston's brain trust in 2010 and had therefore scouted Gudbranson quite heavily in the event the Bruins weren't in line to select either Hall or Seguin.

2. Tyler Seguin, Boston Bruins

July 4, 2013 - Traded to the Dallas Stars along with Rich Peverley and Ryan Button for Loui Eriksson, Reilly Smith, Joe Morrow, and Matt Fraser

Here's where Chiarelli's legacy begins to take shape.

Following Boston's second run to the Stanley Cup Final in three years, the Bruins decided it was prudent to trade a then 21-year-old budding star in Tyler Seguin, who had led the team in goals with 29 during his second year in the NHL but who had recorded only one goal on 70 shots during the 2013 playoffs.

The Bruins won the Presidents' Trophy in 2014 but have missed the playoffs in each of the past two seasons. And while Seguin's star only continues to rise in Dallas, the possible departure of Loui Eriksson in free agency would leave Joe Morrow as the lone player directly involved in this trade to remain on Boston's roster.

"Win now" mode in Boston has quickly turned into "what next?"

1. Taylor Hall, Edmonton Oilers

June 29, 2016 - Traded to the New Jersey Devils for Adam Larsson

While Chiarelli had the benefit of having won a Cup as GM of the Bruins, how he goes down in the history books could be defined by the Hall trade.

Hall marked the first of four forwards selected first overall by the Oilers in the span of six years, and while Edmonton has obviously needed help on the blue line to compliment that group, few foresaw Hall being the means by which it was secured, at least not for anything less than an elite defenseman.

It's not that Larsson, who was drafted fourth overall in 2011, can't or won't turn into that kind of player for the Oilers; what makes this trade especially befuddling is that Hall is among the very best players in the league over the past four years, as evidenced by his five-on-five production.

The sense is Hall could and should have been kept or flipped for a more established defenseman at the very least.

If Larsson doesn't pan out in Edmonton, and the Oilers' perpetual rebuild only continues to stall in Hall's absence, it could spell disaster for Chiarelli.

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