Elsa/Getty ImagesThe Pittsburgh Penguins announced that captain Sidney Crosby would return to the lineup Wednesday against the Dallas Stars after he missed one week with an upper-body injury.Crosby suffered the setback against the New Jersey Devils on Nov. 13 and sat for three games.The Pens went 0-2-1 during his absence and have tumbled into a tie for last place in the Eastern Conference with the Devils at just 18 points.While the exact nature of Crosby's injury is unclear Custom Florida Panthers Jerseys , Penguins head coach Mike Sullivan noted it wasn't a concussion, according toESPN.com.Through 16 games this season, Crosby has registered eight goals and 11 assists for 19 points, placing him third on the team behind Evgeni Malkin (27 points) and Phil Kessel (24 points).The 31-year-old Crosby is already considered an all-time great, with two Art Ross Trophies (most points in a season), two Hart Memorial Trophies (regular-season MVP) and two Conn Smythe Trophies (playoff MVP) to his credit. He'salso a three-time Stanley Cup champion who has registered 1,135 points in 880 career regular-season games.His production has waned in recent years, though, as he hasn't reached 90 points in a season since he racked up 104 in 2013-14.Crosby has finished each of the past two campaigns with 89 points.The Pens are in the midst of one of their worst runs in recent memory, as they are on a four-game losing streak and have lost nine of their past 10 games after starting the season 6-1-2.Pittsburgh is just two seasons removed from winning its second consecutive Stanley Cup www.officialkings.com , and it reached the second round of the playoffs in 2017-18.Crosby will attempt to get the Penguins back on track Wednesday against the 11-8-2 Stars. Many NHL teams have plenty to play for down the final stretch of the regular season, trying to get in the playoffs or to improve their positioning, before 16 teams compete for the Stanley Cup.Some players have a lot at stake, too.Erik Karlsson, Artemi Panarin and Sergei Bobrovsky are a few of the potential free agents in the league with a chance to close strong and cash in by re-signing with their teams or on the open market.The top trio of stars and some other standouts with a lot to gain financially when the season is finished, if not sooner:KARLSSONThe San Jose Sharks acquired the two-time Norris Trophy-winning defenseman from Ottawa before the season started, hoping they would have him for more than a year. To keep Karlsson off the market as an unrestricted free agent, San Jose may have to at least match the eight-year, $88 million deal the Los Angeles Kings gave defenseman Drew Doughty to stay last summer.PANARINDynamic scorers like the Russian winger rarely are available in free agency and a team that wants to spend a lot of money over many years may be able to land an 80-point scorer. Panarin has already said he wants to see if there are better options in the summer than staying with the Columbus Blue Jackets, who are simply hoping he helps them win at least a postseason series for the first time.BOBROVSKYBig-time goaltenders Los Angeles Kings T-Shirts Authentic , like the two-time Vezina Trophy winner, usually stay with their teams and off the market. Like his teammate and fellow countryman, the 30-year-old Bobrovsky will probably want to make the most of his opportunity to make as much money as he can with his next deal while being at or near the prime or his career.MATT DUCHENEIt was a good time for the center, and his bank account, to have one of the best years of his career. He’s averaging more than a point per game this season, starting with Ottawa, before being dealt to Columbus . If Panarin and Bobrovsky appear to be leaving in free agency after the season, the Blue Jackets may give the 28-year-old Duchene a lot to stay before the market opens.JEFF SKINNERThe center has a shot to surpass the 63 points he has reached twice before the team he plays for, the Buffalo Sabres, are relegated to watching the postseason for an eighth straight season. The Sabres want to re-sign Skinner Los Angeles Kings Hoodies Authentic , but he might be willing to take a seven-year deal — instead of the eight he can get to stay — and join a Stanley Cup contender.JAKE GARDINERHe has been out for nearly a month with a back injury, but barring it lingering into the playoffs to cast doubt on his long-term health, one of the best defensemen available will be paid well to stay in Toronto or to go play for another team.WAYNE SIMMONDSThe winger has not produced much offensively with Nashville, which acquired him from Philadelphia, and yet he will have a chance to make a lasting impression when it matters most in the playoffs. Simmonds has a rare combination of scoring ability, toughness and durability.RESTRICTED FREE AGENTSThere is an excellent group of players eligible to be restricted free agents, including: forwards Mikko Rantanen, William Karlsson, Brayden Point, Mitch Marner Los Angeles Kings Hats Authentic , Sebastian Aho and Matthew Tkachuk along with defensemen Jacob Trouba and Zach Werenski. Teams, though, rarely extend offer sheets to other franchise’s restricted free agents as Philadelphia did in 2012 with a $110 million, 14-year deal for Shea Weber, only to have the Predators match it.