and Dominic Thiem.Djokovic has won the last four editions of the even

Should Lee Cattermole and Gary Cahill have seen red? Was Jamie Vardy rightly awarded a penalty? Should Arsenal have had a penalty against Manchester City? Former Premier League referee Dermot Gallagher joined host Rob Wotton in the Sky Sports News HQ studio to analyse a number of contentious calls from the weekend.Was your team affected by a controversial decision? Read on to find out... MATCH: Sunderland v Chelsea, Premier League, SaturdayINCIDENT: Gary Cahill is shown a yellow card, rather than a red, for bringing down Jermain Defoe in the first minute of the match as he looked to go through on goal.GALLAGHERS VIEW: It shows how alert the referee and his assistant were, for two reasons. Defoe is yards offside when he gets the ball but its a back-pass from a Chelsea player, so the assistant is alert and hasnt flagged for offside. The referee then sees Cahill has fouled him but John Terry is close enough to make it a possible goalscoring opportunity rather than an obvious one.GALLAGHERS VERDICT: Correct decision Gary Cahill was booked inside the first minute against Sunderland MATCH: Sunderland v ChelseaINCIDENT: Lee Cattermole is booked for a lunging tackle on Eden Hazard.GALLAGHERS VIEW: I think its a worse challenge than the referee realises. He sees it and thinks its a yellow. It looks a yellow but close up it is a nasty tackle and he is very fortunate to only get a yellow. If he had got a red he could not have complained. Its late and he has hit him with the studs. In real time the referee has not seen it as clearly as we have on the replays.GALLAGHERS VERDICT: Wrong decision Lee Cattermole only saw yellow for this tackle on Eden Hazard MATCH: Sunderland v ChelseaINCIDENT: John Terry is sent off for two yellow cards. The first is for a foul on Jermain Defoe and the second for a challenge on Wahbi Khazri. John Terry was booked for this tackle on Jermain Defoe GALLAGHERS VIEW: The first one is a yellow. Terry realises as well, he puts his hand up straight away. Its late and reckless and he has no chance of playing the ball, which has gone. Its a yellow card.I dont know why he then made the second tackle, he had no reason to. The fact he has followed through has convinced the referee to send him off.GALLAGHERS VERDICT: Correct decision Terry was shown a second yellow card for bringing down Wahbi Khazri MATCH: Leicester v Everton, Premier League, SaturdayINCIDENT: Jamie Vardy wins a penalty after being fouled by Matthew Pennington. It was a similar incident to the one against West Ham a few weeks ago, when Vardy was adjudged to have dived and was shown a second yellow card.GALLAGHERS VIEW: I think it is the right decision, he bundles him over and its a penalty. People says its not the most clear cut but the defender comes across him. Against West Ham, Vardy went across the defender and was looking to make the contact. He initiated it. With Pennington they are side by side and he hasnt taken his ground. He did against West Ham. Side by side they are similar challenges with different outcomes, so you can see how different it is. But the referee got both right.GALLAGHERS VERDICT: Correct decision Jamie Vardy won a penalty for the foul by Matthew Pennington (left), a few weeks after being booked for diving (right) MATCH: Manchester City v Arsenal, Premier League, SundayINCIDENT: From an Arsenal free-kick into the box, both Alexis Sanchez and Olivier Giroud appear to have their shirts pulled. No penalty is given.GALLAGHERS VIEW: If its seen then something should have been done, but its week-in, week-out. We have one more week to go and then in the summer we should sit down and think how can we do this better and identify this. Fernandinho pulled Alexis Sanchezs arm at a free-kick MATCH: Man City v ArsenalINCIDENT: The referee is hit by the ball, breaking up an Arsenal attack, but then later in the game plays an advantage after a foul on Jack Wilshere from which the Gunners score.GALLAGHERS VIEW: You have almost gone from a referees nightmare to a dream because they have scored after the advantage and you can turn around say, I have played a major part in this game flowing properly and the right decision being made. Thats what you want every game. The ball hit the referee in Man Citys draw with Arsenal, but he later played an advantage that allowed Arsenal to score MATCH: Middlesbrough v Brighton, Championship, SaturdayINCIDENT: Brightons Dale Stephens is sent off for a foul on Gaston Ramirez. The referee initially pulls the yellow card out of his pocket but appears to change his mind after seeing a gash on Ramirezs leg.GALLAGHERS VIEW: This is such a debatable incident. He sees the outcome of the tackle and when you see an injury like that, I dont see how you can keep the player on the park. You see his leg and if he hadnt been sent off how would you control the rest of the game?He was stretchered off and needed serious medical attention. Its such a nasty injury. Maybe the referee didnt realise at first how serious it was but having realised I think he has taken the right action.GALLAGHERS VERDICT: Correct decision Dale Stephens was sent off for this tackle Also See: City-Arsenal talking points Ranieri urges stars to stay Poch: Forget about Arsenal Live on Sky Cheap Jordan 1 . Neymar curled home a free kick from just outside the area to put the 2014 World Cup host ahead in the 44th minute. Three minutes after the break, a simple through pass from Paulinho freed Oscar and the Chelsea star rounded goalkeeper Jung Sung-ryong to extend Brazils lead. Cheap Air Jordan 1 Free Shipping . -- Running backs Darren McFadden and Rashad Jennings were back at practice for the Oakland Raiders on Wednesday despite being hampered by hamstring injuries. http://www.cheapairjordan1.com/ . -- Hunter Smith scored the winner with just 12 seconds remaining in the third period as the Oshawa Generals edged the host Sarnia Sting 5-4 on Friday in Ontario Hockey League action. Air Jordan 1 For Sale Cheap . The catch: It needs a lot of money, and it needs it fast. Wholesale Air Jordan 1 . -- An ugly goal by Nick Bonino helped the Anaheim Ducks overcome the defensive-minded Phoenix Coyotes on a night when their ragged power play continued to struggle.New world No 1 Andy Murray will face Stan Wawrinka, Kei Nishikori and Marin Cilic in his group at the World Tour Finals in London, live on Sky Sports. Murray became the 26th player to top the world rankings on Monday, although he already knew that would be the case when he made it to the Paris Masters final on Saturday.The British superstar went on to beat John Isner in three sets in Sundays final and now faces the worlds third, fifth and seventh-ranked players in the McEnroe Group at the season-ending event. Live Tennis: ATP World Tour Finals November 13, 2016, 12:00pm Live on Get Sky Sports Get a Sky Sports pass Murrays record in the tournament, which starts on Sunday, is not that good and Wawrinka beat him in straight sets 12 months ago for his third straight win over the Briton. World Tour Finals: The Groups ATP World Tour Finals: Whos in whos group at Londons O2? But Murray won the only meeting between the pair this season in the semi-finals of the French Open and leads the career head-to-head 9-7.Being drawn against Nishikori gives Murray the chance for some revenge, as the Japanese player is one of few to have beaten him this summer, knocking him out in the US Open quarter-final. Kei Nishikori celebrates defeating Murray at the US Open That was only his second win over Murray in nine matches with the other having come at the World Tour Finals in 2014.Cilic also owns a 2016 win over Murray which came at the Cincinnati Masters, although Murray did claim a home win over the Croat at Queens and owns an 11-3 lifetime record against him. Watch NOW TV Watch Sky Sports for just ￡6.99. No contract. Murray said: The last few years I havent played so well there. One year, I played really well and missed out by, I dont eveen know what it was in the end, but by a game.ddddddddddddOne of the years, I played one of the best matches of the year against Rafa [Nadal] in the semi-finals... I just want to play my best and finish the year on a good note in that respect. Novak Djokovic has won the event the last four seasons The Lendl Group features deposed world No 1 Novak Djokovic, Milos Raonic, Gael Monfils and Dominic Thiem.Djokovic has won the last four editions of the event at the O2, with three of his final victories coming over the injured Roger Federer.Monfils and Thiem are playing in the event for the first time. Jamie Murray and Bruno Soares of Brazil are top seeds for the doubles event Jamie Murray qualified as top seed for the doubles event with his Brazilian partner Bruno Soares, and they have been drawn against former world No 1 pairing Bob and Mike Bryan of the United States.Also in their group are Ivan Dodig and Marcelo Melo, and Max Mirnyi and Treat Huey. Daily Schedule: Afternoon session Evening session Sunday 13 November Djokovic v Thiem Raonic v Monfils Monday 14 November Wawrinka v Nishikori Murray v Cilic Check our game-by-game coverage from all Group matches at the ATP World Tour Finals in London - including Andy Murray - on skysports.com/tennis, our app for mobile devices and iPad and our Twitter account @skysportstennis. Also See: World Tour Finals: The Groups Murrays milestones The climb to World No 1 WATCH: Sky Sports tribute ' ' '