VIENNA, Austria -- Nico Rosberg has announced his retirement from Formula One less than a week after being crowned world champion in Abu Dhabi.Rosberg made the announcement at a news conference in Vienna, where he is due to be presented with the championship trophy. He made it clear that after achieving his childhood dream of being crowned champion, he wanted to spend more time with his wife, Vivian, and young daughter away from the pressures of Formula One, saying he could not go through that again.After twice losing the title in direct battles with Mercedes teammate Lewis Hamilton in 2014 and 2015, Rosberg finally beat Hamilton to the title this year. He confirmed he was not considering returning to F1 at a later date.?So its a very special day today to receive the trophy this evening, but for another reason as well, Rosberg said. I want to take the opportunity to announce Ive decided to end my Formula One career in this moment here, on Monday. To explain, ever since I started, when I was 6 years old, I had a very, very clear dream, and that was to become Formula One world champion. It was very clear in my mind, as long as I can think when I was growing up. Now Ive achieved that, Ive put everything into it for 25 years of racing.With the help of everyone around me, with the help of fans, my family, my friends, Ive managed to achieve it this year. Its been an incredible experience for me I will remember forever. At the same time, its been very, very tough. The last two years losing to Lewis were extremely difficult moments for me, which fuelled my motivation in a way I didnt even know was possible, to fight back and to achieve my dream finally. This year was extremely tough, as I put absolutely everything into it. I left no stone unturned from Austin last year where I suffered a lot after the loss.I pushed like crazy in all directions. I want to thank everyone who was involved, my family ... a lot of sacrifices. My wife, for example, at home; every time I was home, she understood that I needed to rest so I never did any nights, I didnt have to take after my daughter. Didnt do any nights, didnt do any difficult things, she was always there to support and make everything possible.Thats one example of the commitment we all put into it. Ive achieved this childhood dream, and Im not willing to do that sort of commitment for another year, and Im not interested in coming fourth or whatever. Im a fighter, and I want to win. So Im not interested to do that again, so Ive decided to follow my heart, and my heart has told me to stop there and call it a day, do other things. Its been wonderful. It just feels right to me. Im very, very excited. My wife Vivian is very excited to have her husband back, and Im going to be dad again, which is going to be wonderful, so thanks very much for your support all these years. Im cherishing the moment. Its absolutely awesome, all these experiences now, to share the success with all of you and with all the other people, its been phenomenal.Mercedes team boss Toto Wolff added: This is a brave decision by Nico and testament to the strength of his character. He has chosen to leave at the pinnacle of his career, as world champion, having achieved his childhood dream. The clarity of his judgement meant I accepted his decision straight away when he told me.Its impossible to capture the essence of a person in a few short words, but Nico has a special combination of natural talent and fighting spirit that have brought him to where he is today. Throughout his career, people have thought he was on a golden path to success just because his father was a world champion; in fact, I think in some ways that made the challenge greater -- and meant he had to fight even harder with the weight of expectation on his shoulders.With Mercedes, Nico has been a relentless competitor, bouncing back from tough times in an inspirational way, and he earned the respect of the sport with his tenacity, his fighting spirit and his grace under pressure. Since 2010, he has poured competitive energy into our team, and we have grown stronger because of it. We simply say thank you for the incredible contribution he has made to our success, alongside two of the all-time great drivers, Michael and Lewis.For the team, this is an unexpected situation but also an exciting one. We are going into a new era of technical regulations, and there is a free Mercedes cockpit for the seasons ahead. We will take the necessary time to evaluate our options and then find the right path for our future.Mercedes has not yet announced who will replace him. CHARLOTTE, N.C. -- When its all said and done at the end of this season, NASCAR just might have to thank Hurricane Matthew for saving its Chase.It sure didnt seem like that when rain was trying to swamp the weekend at Charlotte Motor Speedway. No track activity Friday, nothing again on Saturday and no buzz about the opening race of the second round of the playoffs.Forced to run two races on Sunday, both NASCAR and Charlotte Motor Speedway somehow managed to pull off a miracle. They got a pair of decent races on a perfect North Carolina fall afternoon -- not great races, but good enough that the Chase now warrants some chatter .Even better, conversation will be about drivers and the standings and how teams are going to react after a race of attrition at Charlotte caused five championship drivers to finish 30th or worse. Now, only eight points separate Denny Hamlin in the transfer position from last-place Kevin Harvick.Do you know what that means? A reprieve from talking about laser inspection, changing rules and encumbered finishes.Finally, a chance to focus on what should really matter: the racing!The word drama was bandied about often Sunday as contender after contender went to the garage. First up was Joey Logano , who had a wrecked car because of a tire issue. Then Harvick pulled into his stall with a mechanical problem. Austin Dillon was spun by Martin Truex Jr. on a restart. Chase Elliott was collected in that accident. Then Hamlin had an engine failure while running second late in the race.None of that is the kind of drama that has driven the Chase the last two years. That excitement centered around Brad Keselowski getting tackled, Keselowski getting punched and Matt Kenseths running feud with Logano. Yes, those are the instances that make NASCAR a watercooler conversation on Monday mornings, but the drivers absolutely abhor the sensationalism and scrutiny that comes with such displays of emotion or personality.So now theyve provided an opportunity to really look at the racing and wonder how each team will react in this suddenly intense Chhase.ddddddddddddhe first round didnt knock anyones socks off -- two Truex wins and a Harvick victory -- and no shocking elimination. Everyone probably wanted Tony Stewart to make it out of the first round, but nobody thought he was running well enough to do it. Stewart getting knocked out was hardly the same level of stunner as Jimmie Johnsons first-round elimination a year ago.But after Sundays opener , this round has the potential for some serious nail-biting over the next two weeks. Some really big names are going to be eliminated at Talladega Superspeedway, where the Chase field will be trimmed from 12 to eight drivers.Free from worry is Johnson, the somewhat surprise winner on Sunday. It was his eighth victory at the Hendrick Motorsports home track, but Johnson has been a bit overlooked the last three years. Hed failed in the first two years of the elimination format to get past the second round, and theres been no reason to think that Hendrick Motorsports can compete with the four Toyota drivers or Harvick.But a summer of hard work has suddenly put Hendrick on the radar , and both Johnson and teammate Elliott have turned it up in the Chase. Now, Johnson has a spot in the round of eight, and his sights squarely on a seventh championship.History has shown that Johnson dominance does little for the NASCAR fan base, and theres been a total lack of appreciation for his five consecutive championships and six overall. But his win at Charlotte felt different. There was a sense that seven might actually be doable, and Johnsons pursuit of Richard Petty and Dale Earnhardt in the record books could be embraced this year.Whether Johnson moves your meter, his hunt for that seventh title is surely more entertaining that which driver fails the laser inspection each week.So thank you, NASCAR. Thank you, Chase teams. Thank you, Charlotte Motor Speedway. Thank you, Jimmie Johnson.Finally, theres something to talk about in NASCAR. ' ' '