Novak Djokovic has seemed like a man often having an argument with himself since he was unexpectedly knocked out in the third round of Wimbledon in July. Once an uncomplicated, all-business competitor, a less motivated, more philosophical Djokovic has emerged in recent months.Signs of this tension in Djokovic were on display Tuesday evening at the ATP World Tour Finals in Londons O2 arena in what was the closest thing he has ever had to a must-win round-robin match. The familiar, fierce competitor ultimately prevailed as Djokovic punched through to the semifinals with a 7-6 (6), 7-6 (5) win against Wimbledon finalist Milos Raonic, against whom he is now 9-0.But it wasnt without signs of his ongoing interior struggle.If I had to pick one thing [to explain why I won], I would say it was my just hanging in there mentally, waiting for my opportunity to come, Djokovic said in his on-court interview after the match. Milos was playing very well. It was a very close match, just a few points separated us.True, but ...How often did the dominant Djokovic of recent memory allow an opponent who has never beaten him reach set point after Djokovic had forged ahead by a break?There were dangerous lapses against Raonic, who is capable of taking an opponents racket out of his hand with the sheer efficiency of his monstrous serve. Just as significant, Raonic led by a mini-break in each of the tiebreakers. His wounds from that point on were largely self-inflicted. Put them down to an understandable lack of confidence in key moments.Djokovic has probably dallied in like fashion before, but rarely at this event and in this venue, where he has routinely been at his zenith. He has won 20 of his past 21 matches at the O2 and captured the title four years in a row.All that raises a question: Why would anyone mindful of Djokovics 23-0 record against the other three men in his group call this round-robin engagement a must-win match?For one, Djokovic was recently stripped of his No. 1 ranking by Andy Murray. If Djokovic hopes to get it back and finish the year ranked No. 1, he will need to win one more match than Murray. Murray won his opener and plays Kei Nishikori on Wednesday (9 a.m. ET on ESPN3).?Heres another reason: Despite that 0-9 record against Djokovic, Raonic might be the best player who has yet to win a major. Hes hungry, dedicated and on the cusp of a breakthrough prefigured when he eliminated Roger Federer in the Wimbledon semifinals.But perhaps most important, Djokovic is under pressure to show hes not at war with himself. His identity as a hard-edged tennis champion is in conflict with self-absorbed concerns about his evolution as a person and the peace-and-love philosophy espoused by his Svengali-like adviser, Pepe Imaz.Things have gotten complicated for Djokovic in recent months. His nerves have showed signs of fraying. He has had a year that qualifies as spectacular, with two Grand Slam titles and a career Grand Slam in the books, yet his struggles after Wimbledon have been conspicuous.If he wins this event for a fifth consecutive time and retakes the top ranking, the losses in his past four outings will pale in significance. The crushing defeats inflicted by Juan Martin del Potro in the Olympic Games and Stan Wawrinka in the US Open final will be put down to his minor injuries.It was a very close match, Djokovic told reporters after beating Raonic. It really could have gone either way.It was a close match against Raonic, one that could have gone either way. But the important thing for Djokovic is that hes safely in the semifinals and on pace with Murray -- and nobody can argue with that. Baker Mayfield Womens Jersey .C. -- Calgarys Kevin Koe did it the hard way again. Austin Seibert Browns Jersey . Arsenal failed to take full advantage of its main rivals stumbles on Saturday as substitute Gerard Deulofeu levelled with a hard shot from a tight angle in the 84th minute to give Everton a deserved point. Ahead of a crucial fortnight that will see them play against Napoli in the Champions League, Manchester City and Chelsea, Arsenal leads by five points ahead of Liverpool and Chelsea. http://www.brownsauthenticproshop.com/Youth-sione-takitaki-browns-jersey/ . - NASCAR announced a 33-race schedule for the 2014 Nationwide Series with virtually no changes from this years slate. Baker Mayfield Jersey . Most important, perhaps, it went off without a hitch. Organizers poked a little fun at the now-infamous opening ceremony gaffe that saw only four out of five snowflakes open up into rings, leaving the Olympics logo one ring short. Bernie Kosar Browns Jersey .ca look back at each of the Top 10 stories of 2013. Today, we look back at Boston Strong - a citys recovery from tragedy. LINCOLN, Neb. -- Knocked unconscious in last weeks game, Nebraska quarterback Tommy Armstrong Jr. wasnt medically cleared to play against Minnesota until hours before kickoff Saturday night.Everything was going great until the third quarter when he injured his left ankle on a sneak and needed help to the sideline. When the offense returned to the field early in the fourth, Memorial Stadium roared at the sight of Armstrong, and he went on to lead the No. 21 Cornhuskers 91 yards to the tiebreaking touchdown in a 24-17 victory.Armstrong scored the winner himself, tweaked his hamstring as he crossed the goal line and was carried to the bench by offensive linemen Tanner Farmer and Jerald Foster like a conquering hero.Tommy is the toughest dude Ive been around, said safety Kieron Williams, who finished off the Gophers with an interception with 1:29 left. A lot of quarterbacks wouldnt have played a snap. People can say what they want about him. I wouldnt want to go to war with any other quarterback.The Huskers (8-2, 5-2 Big Ten) still need to win out and have Wisconsin lose once in order to reach the conference championship game. But the night was a perfect re-set for a team that had lost two straight, including that humiliating 62-3 beat-down at Ohio State last week.Armstrong, who spent the week going through the concussion protocol , played one of his best games in weeks and outperformed Minnesotas Mitch Leidner. Armstrong was 19 for 27 for 217 yards with two touchdowns, and he ran nine times for 61 yards. His last run was a 13-yarder to break a 17-17 tie with 7:17 left.Before starting the winning drive, offensive coordinator Danny Langsdorf and coach Mike Riley asked Armstrong if there were certain types of plays he didnt want called because of his health.I had to suck it up and know I would be OK, Armstrong said. I told them to open up the playbook. If we needed quarterback runs, I was there to run. If we needed to throw outside the pocket, I could do that, too.dddddddddddd.Riley said Armstrongs competitiveness showed through against the Gophers (7-3, 4-3).He doesnt ever like to come out of the game. He always thinks hes going to make the next play, Riley said.Nebraska allowed a season-low 265 total yards, with Aaron Williams and Josh Banderas making 11 tackles apiece.The Huskers trailed at halftime for a fourth straight game. Newby tied it 17-all in the third quarter, taking a screen pass from Armstrong 31 yards to the end zone.You go the road and you have a chance, said Gophers coach Tracy Claeys, whose team had its four-game winning streak end. But we didnt play well enough in the second half to win the ball game; Nebraska played better than we did.THE TAKEAWAYMinnesota: The Gophers lost control of their destiny in the Big Ten West. They might regret some of their play-calling against the Huskers. Other than a few occasions Rodney Smith bounced to the outside for good runs, it was mostly futile for them to try to run up the middle.Nebraska: If anyone doubted Armstrongs toughness, he proved his mettle. He also showed he is the most important player on this team. If he goes down, the Huskers are in deep trouble.POLL IMPLICATIONSWith Virginia Tech and North Carolina losing, Nebraska could move up a spot or two in the Top 25 .SHUTDOWN DEFENSEMinnesota out-yarded the Huskers 172-137 in the first half but managed only 93 yards and no points the rest of the way.We were a little out of whack and not playing our ball, Banderas said. Older guys took charge and knew what we had to do.UP NEXTMinnesota hosts Northwestern, which shut out the Gophers 27-0 last year.Nebraska hosts Maryland in the first meeting of the teams.---More AP college football at http://collegefootball.ap.org ' ' '