The Edmonton Oilers skated Tuesday morning ahead of their game against the Los Angeles Kings at Rexall Place.

They had set forward lines, but rotated all seven defensemen, making the lineup a bit of a guessing game. And that didn't include Theo Peckham, who has been recalled from Oklahoma City of the American Hockey League.

Here is the lineup the Oilers could use Tuesday, with defense pairings that could change by game time:

Taylor Hall - Ryan Nugent-Hopkins - Jordan Eberle

Teemu Hartikainen - Sam Gagner - Ales Hemsky

Ryan Smyth - Eric Belanger - Nail Yakupov

Ben Eager - Chris VandeVelde - Magnus Paajarvi

Nick Schultz - Justin Schultz

Ryan Whitney - Jeff Petry

Ladislav Smid - Mark Fistric

Nikolai Khabibulin

Devan Dubnyk

Scratched: Lennart Petrell, Theo Peckham, Corey Potter

Injured: Ryan Jones, Shawn Horcoff, Anton Lander

BUFFALO, N.Y. -- As the Buffalo Sabres try to tighten up defensively, coach Lindy Ruff will make veteran defenseman Jordan Leopold a healthy scratch Tuesday, when the Sabres play host to the Winnipeg Jets at First Niagara Center.

Buffalo has given up 33.8 shots per game, more than any team in the NHL. Only the Florida Panthers (56) have allowed more non-shootout goals than the 54 the Sabres have given up.

"It's not the first time I've ever sat and watched a game," Leopold said. "You learn from it. It creates a fire underneath you and urges you to get better."

Colorado Avalanche captain Gabriel Landeskog was back at practice Tuesday, according to a report from Denver Post writer Adrian Dater.

Landeskog was wearing an orange jersey, likely signifying no contact.

Landeskog hasn't played since absorbing a hard hit from San Jose Sharks defenseman Brad Stuart in a Jan. 26 game. He has one goal in four games this season.

"It's great to have him out there with us right now," wing P.A. Parenteau told the newspaper. "Even at a practice, he brings a lot of energy to the team."

Landeskog did not speak to the media, per team injury policy.

ST. LOUIS -- The probable lineups for a game Tuesday night between the San Jose Sharks and St. Louis Blues at Scottrade Center:

SHARKS

Patrick Marleau - Joe Thornton - Joe Pavelski

Ryane Clowe - Logan Couture - Martin Havlat

Tommy Wingels - Michal Handzus - Tim Kennedy

Matt Pelech - Andrew Desjardins - Adam Burish

Dan Boyle - Brad Stuart

Justin Braun - Andrew Murray

Marc-Edouard Vlasic - Brent Burns

Antti Niemi

Thomas Greiss

Scratches: Scott Gomez, TJ Galiardi, Jason Demers.

Injuries: James Sheppard (lower-body).

Note: The Sharks hadn't announced it officially as of Tuesday morning but Desjardins (undisclosed) was expected to be removed from injured reserve and inserted into the lineup after missing four games.

BLUES

David Perron - David Backes - T.J. Oshie

Andy McDonald - Alex Steen - Vladimir Tarasenko

Vladimir Sobotka - Patrik Berglund - Chris Stewart

Jaden Schwartz - Scott Nichol - Ryan Reaves

Ian Cole - Alex Pietrangelo

Barret Jackman - Kevin Shattenkirk

Kris Russell/Wade Redden - Roman Polak

Jake Allen

Jaroslav Halak

Scratches: Brian Elliott, Matt D'Agostini, Redden or Russell.

Injuries: Jamie Langenbrunner (hip) is out for the season.

The Vancouver Canucks will start Cory Schneider in goal and get another big addition to the lineup with the return of forward David Booth for Tuesday night's game against the Chicago Blackhawks.

Chicago will be looking to tie the NHL record by earning at least a point in 16 consecutive games to start the season, and Schneider, who gave up four goals and lost his previous start to the Dallas Stars on Feb. 15, will be looking to end the Blackhawks' streak.

TAMPA, Fla. -- The Tampa Bay Lightning will be seeking to end a three-game home slide Tuesday night at the Tampa Bay Times Forum.

The good news? Their opponent is playing the second half of back-to-back road games, and the Lightning have had excellent results when catching a team in that scenario.

The bad news? Their opponent is the sizzling Toronto Maple Leafs, coming off a 3-0 shutout of the Florida Panthers on Monday night. Toronto has posted a 7-2-0 record in their first nine road games of the season, a record of road success the likes of which the Maple Leafs have not enjoyed since the 1940-41 season.

The St. Louis Blues traded defenseman Scott Ford to the Nashville Predators for forward Jani Lajunen on Tuesday.

Ford is a 33-year-old who spent four years at Brown University and has logged more than 400 games in the American Hockey League. He had two goals and six points in 43 games this season with the Peoria Rivermen after spending the previous four seasons with Milwaukee, which is Nashville's AHL affiliate.

Lajunen was a seventh-round pick in the 2008 NHL Draft by the Predators. The 22-year-old Helsinki native is in his second season in the AHL, and had one goal and five points in 40 games for the Admirals in 2012-13.

NASHVILLE, Tenn. -- Nashville Predators coach Barry Trotz said Tuesday center Paul Gaustad, who is tied for fourth in the League in faceoff efficiency at 62.8 percent, would miss that night's game against the Detroit Red Wings at Bridgestone Arena with an upper-body injury.

Gaustad got hurt in Monday's 6-5 loss at the Colorado Avalanche in the first period, playing 58 seconds, and did not return. Trotz said he would know more about Gaustad's injury in a few days. Gaustad also missed the second, third and fourth games of the season with an upper-body injury that could be related.

OTTAWA -- Here are the projected lineups the New York Islanders and Ottawa Senators likely will use when they play Tuesday at Scotiabank Place:

ISLANDERS

Matt Moulson - John Tavares - Brad Boyes

Josh Bailey - Frans Nielsen - Kyle Okposo

Michael Grabner - Keith Aucoin - Marty Reasoner

Matt Martin - Casey Cizikas - Colin McDonald

Travis Hamonic - Andrew MacDonald

Thomas Hickey - Lubomir Visnovsky

Mark Streit - Joe Finley

Rick DiPietro

Evgeni Nabokov

Injured: Radek Martinek, Matt Carkner, Brian Strait

Scratched: David Ullstrom, Eric Boulton

Coming into Ottawa after a 7-0 blowout loss to the Philadelphia Flyers at home, the Islanders are looking to regroup on this road trip.

"[Monday] was a horrible game for us," Streit said. "If you lose 7-zip, you want to turn the page. We have a big opportunity [Tuesday] to play better. As the captain, didn't really need to say anything [after that loss]. Everybody knew what happened on the ice and how awful we played. I didn't think it was the right moment to step up in the locker room. [Tuesday] on the ice, we need to play a really good game and come together."

In January, NHL Green announced the launch of Hat Tricks for Trees™, an initiative assisting The Nature Conservancy’s effort to save Brazil’s Atlantic Forest. The National Hockey League Foundation is donating 50 trees for every hat trick scored throughout the 2012-13 regular season and NHL Playoffs.

On February 16, John Tavares tallied his fourth career hat trick, the tenth hat trick scored in the NHL this season. To date, the League has now pledged to plant 500 trees as part of the initiative.

Let’s take a look back at the players who notched the first ten hat tricks this season:

Thomas Vanek (Buffalo Sabres) - Vanek began the NHL season on a torrid pace and is currently the League-leader with 25 points in 15 games played. On Thursday, January 31st, Vanek recorded his second five-point game when he had a hat trick and added a pair of assists, in a 7-4 Sabres win in Boston.

Henrik Zetterberg (Detroit Red Wings) - Detroit's new captain owns a five-point game this season as well -- he had a hat trick and two assists in the Red Wings' 5-3 victory against St. Louis in early February. On a team in transition, Zetterberg has raised his game.

Chris Kunitz (Pittsburgh Penguins) – Penguin’s Chris Kunitz broke from a scoring drought in early February when he clinched the third hat trick in his career and a 6-3 victory over the Washington Capitals. “You know what to expect,” said Captain Sidney Crosby of Kunitz. “(Kunitz) works hard, gets to a lot of loose pucks and creates a lot of pressure on other teams. Nobody likes to deal with him in front of the net.”

Eric Staal (Carolina Hurricanes) - Staal and teammate Jeff Skinner scored 9 seconds apart during a four-goal second period for the Hurricanes, a game which they went on to win 6-3 over the Sabres. Staal restored Carolina's two-goal lead in the third period by firing the puck past Jhonas Enroth. He polished off his 13th career hat trick with an empty-netter with 1:28 left in the contest.

Marian Gaborik (New York Rangers) - Gaborik, who moved to the left wing this season to accommodate new teammate Rick Nash, is a pure goal scorer with hands that goaltender Henrik Lundqvist said are some of the best in the League around the goal crease. He put them on display twice against the Bruins in late January, finessing the puck into the net for three important goals. Gaborik finished off a hat trick with a breakaway goal 26 seconds into overtime to give the Rangers their first win of the season.

Matt Read (Philadelphia Flyers) - Matt Read notched his first career hat trick in late January — and he thought it came pretty easily. Read helped his Philadelphia Flyers beat the Florida Panthers 7-1. "It's pretty special getting your first hat trick," Read said. "I'm the beneficiary of playing with two good guys (Claude Giroux and Wayne Simmonds). It's pretty easy when you're playing with two good players. Just be at the right spot at the right time -- and just do the little things right -- and good things are going to happen."

Nick Bonino (Anaheim Ducks) - Bonino scored two goals in the first six minutes of an early February game to chase Jonathan Quick from the net, before completing his first career hat trick against Jonathan Bernier. Bonino scored his third goal on a power play with 11:21 left in the game. The Anaheim Ducks beat the Los Angeles Kings in the first Freeway Faceoff of the season.

Steve Sullivan (Phoenix Coyotes) - Steve Sullivan scored three goals, his eighth career hat trick, when the Phoenix Coyotes skated passed the Columbus Blue Jackets by a score of 5-1 for their first win of the season. Sullivan put the game out of reach near the midpoint of the third period, squeezing a shot between goalie Steve Mason's pads on a redirect off a pass by Derek Morris. It was his first hat trick since Dec. 14, 2009.

Michael Cammalleri (Calgary Flames) - Still seeking his first goal of the season, Michael Cammalleri felt he was rounding into form before suffering a slightly torn hip flexor that forced him out of the Calgary Flames' lineup for three games. He didn't hesitate to make up for lost time. Coming back off the injury, Cammalleri had a hat trick – including the 200th goal of his career – as part of a four-point night as the Flames earned a 7-4 victory against the Dallas Stars on February 13.

John Tavares (New York Islanders) – John Tavares recorded his fourth career hat trick, and assisted on another goal, to lead the New York Islanders to a 5-1 win over the New Jersey Devils on February 16. Tavares, the first player taken in the 2009 NHL Draft, is doing everything he possibly can to get the New York Islanders into the Stanley Cup Playoffs for the first time since 2007.

Continue to follow the NHL Green Slapshots™ blog, and NHL (@NHL) on Twitter (#NHLGreen), as we track hat tricks throughout the season.