CHARLOTTE, N.C. -- Dale Earnhardt Jr. will miss the rest of the NASCAR season -- 18 races total -- as he continues to recover from a concussion.NASCARs most popular driver first began experiencing concussion-like symptoms in late July. He has been undergoing treatment from Dr. Micky Collins at the University of Pittsburgh Medical Center Sports Medicine Concussion Program. Hes also being treated by Charlotte neurosurgeon Dr. Jerry Petty.To say Im disappointed doesnt begin to describe how I feel, but I know this is the right thing for my long-term health and career, Earnhardt said in a statement Friday. Im 100 percent focused on my recovery, and I will continue to follow everything the doctors tell me.Earnhardt said doctors have seen progress in his recovery, and he plans to be back in the car next February for the season-opening Daytona 500.Joey Logano said he understands how difficult this choice was to make for Earnhardt.I look up to him for what hes doing. I know how hard that is to look out and want to be inside that racecar, Logano said. Your life and your health is not worth risking for the sport.Elliott Sadler, who drives for Earnhardts Xfinity program, said he had mixed feelings about his friends absence. He knows how desperately Earnhardt wanted to return this season.The flip side is Im happy and proud of him to take a step back and get everything in line from the medical side, Sadler said.Jeff Gordon and Alex Bowman will continue to share seat time in the No. 88 Chevrolet for Hendrick Motorsports. Gordon will drive four races, including Sunday at Darlington Raceway for the Southern 500, as well as Richmond, Dover and Martinsville. Bowman will finish the year with eight more starts.Jeff and Alex will give us a great opportunity over the rest of the season, team owner Rick Hendrick said. Jeff is one of the best of all time and knows our system. He brings things to the table that no one else can. Alex is a young driver with a lot of talent, and he will give us a fresh perspective. We know theyre not only capable of running up front and giving us a chance to win, but theyll help us get better.Jamie McMurray said those in the Sprint Cup garage miss having Earnhardt around, but the sport will continue to thrive no matter how long he may be out.You dont show up at the track for two or three weeks, not that youre forgotten, but its crazy how things move on, he said.Earnhardt has struggled with concussions before, including the 2012 season when he missed two races after suffering a pair of concussions over a six-week span.NASCAR has been updating its focus on concussions and treatment programs, beginning in 2002 in part because Earnhardt admitted he was unable to fully concentrate or communicate with his crew chief after an accident at California. He self-diagnosed himself with a concussion, which he revealed weeks later.NASCAR then said doctors at infield care centers could require drivers to undergo CT scans or MRIs if they suspected a concussion. Clearance to race after suffering a concussion is not given until after a driver obtains a medical release.More than a decade later, Earnhardt also spurred a baseline testing program that is now required of all drivers every preseason.I know how hard Dale has worked and how frustrating this is for him, Hendrick said. He wants to be back, and we want him back, but we want it to be for the long haul. Weve had incredible support from everyone involved with the team, including all of our sponsors. Theyve put Dales health first every step of the way.David Pastrnak Jersey . There are some early surprises in the race for the Hart Trophy, but two of the contenders are the leagues biggest stars over the past decade. 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The Canucks have lost five straight games and six of their last seven, leaving them in a logjam in the Pacific Division, currently sitting fifth - good for ninth in the Western Conference.UK Anti-Doping investigators have met with British Cycling as the crisis which has engulfed the sport reached the home of the national governing body, which it shares with Team Sky.Two UKAD officials on Friday travelled to the Manchester Velodrome, known as the Medal Factory as the place where the successes of the last three Olympic Games were made.UKAD would not comment further to protect the integrity of the investigation and would not disclose whether the meeting was pre-arranged or the result of an unannounced visit.British Cycling and Team Sky is cooperating with UKADs investigation into allegations of wrongdoing within cycling; on Thursday evening it was one solitary claim being investigated, but now there is more than one.The initial UKAD announcement came as the Daily Mail reported the anti-doping authority is investigating Team Sky and Sir Bradley Wiggins over the contents of a medical package, allegedly delivered to Team Sky in France on June 12, 2011. The newspaper reported that UKAD is looking at what that contained.Press Association Sport understands that Wiggins and his representatives have received no notification from UKAD and believe the 36-year-old is not a subject of the investigation.Five-time Olympic champion Wiggins, Britains first Tour de France winner in 2012, said in a statement to Press Association Sport on Saturday: I welcome this investigation.Team Sky are confident there has been no wrongdoing and had asked British Cycling to contact UKAD.British Cycling said it is cooperating fully.There is no timescale for UKAD investigations. And UKAD did not go into any detail about the allegations and mentioned no names.But concerns on Thursday were raised about the availability of controversial and powerful painkiller Tramadol among the Great Britain team at the 2012 Road Cycling World Championships.Tramadol is on the World Anti-Doping Agencys monitoring list, with concerns over its side effects.Press Association Sport understands the UKAD investigation did not originate from a source within Team Sky or British Cycling, which have been intertwined since the road team was established for their first season in 2010.Sir Dave Brailsford combined his role as British Cycling performance director and Team Sky principal until April 2014, when he quit the national governing body.Brailsford oversaw the British team which won eight gold medals at the 2008 Beijing Olympics and the 2012 Games in London.Brailsford now concentrates on Team Sky, which was established with a zero tolerance to doping mantra.Britain won six gold medals at the Rio Olympics in August, despite Brailsfords successor Shane Sutton leaving his role in April under discrimination allegations which are subject of an independent review.Many riders and staff members have haad, and some continue to have, dual roles with British Cycling and Team Sky.ddddddddddddThe partnership was cleared of any conflict over UK Sport funding in March 2011 after a year-long review carried out by Deloitte.Now British Cycling and Team Sky are under further scrutiny.Press Association Sport understands Team Sky and Brailsford have tried to ascertain the events of June 2011, gathering written statements from staff present at the time and documentation to piece together the events. The evidence was for British Cycling and UKAD.The logistics surrounding a cycling team are complex and packages are regularly transported. Determining the contents of the specific package will be central to the investigation, which could take some time.The Daily Mail on Thursday reported that while British Cycling did not identify the substance in the package, the national governing body indicated it did not contain triamcinolone.According to documents leaked by hacker group Fancy Bears, Wiggins had a therapeutic use exemption (TUE) for triamcinolone acetonide - a synthetic corticosteroid - which was effective from June 29, 2011. Any use of a banned substance requires an active TUE.Wiggins won the Dauphine Libere stage race - now known as the Criterium du Dauphine - on the day the package was reportedly delivered, completing victory in the eight-day event after the final stage to La Toussuire.It was Wiggins biggest road success to date and he was one of the favourites for the 2011 Tour de France, only to suffer a fractured collarbone on stage seven.He became the first British winner of the Tour a year later.Wiggins and Team Sky have strenuously denied any wrongdoing since it emerged the five-time Olympic champion has received six TUEs during his career, insisting each time the exemptions were medically necessary due to asthma and pollen allergies.Wiggins used the powerful anti-inflammatory drug triamcinolone -- a substance which has a history of abuse in cycling -- on the eve of the 2011 and 2012 Tours and 2013 Giro dItalia.Three TUEs - to take the drug to deal with a pollen allergy that aggravates his long-standing asthma condition - were approved by the UCI, cyclings world governing body, and there is no suggestion that Wiggins or the team have broken any rules.Jonathan Tiernan-Locke, who was sacked by Team Sky in 2014 and served a two-year ban for an anti-doping infringement, told the BBC on Thursday that the controversial and powerful painkiller Tramadol was offered freely around the British team during the 2012 Road Cycling World Championships.The team doctor from the event denies the claim, sources within British Cycling said. 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