At the top of the english premier league, after they beat hull 2 0 at stamford bridge. Diego costa inevitably the man of the moment. He was dropped last week after an apparent run in with coach Antonio Conte and with reports of a potential move to china, well, he was back in the starting line up and of course back in the goals. Costa broke the deadlock when he converted a low cross from victor moses in the seventh minute of first half injury time. The length of the added time due to sickening clash of heads, which saw ryan mason taken to hospital with a fractured skull. Hull have confirmed hes in a stable condition. Gary cahill made the points safe for chelsea nine minutes from time. This game was very difficult for us. It is not easy, it is not easy to play this type of game. I think our opponent was very good. They created difficulties for us. But i think we are in the second part of the season and every game now becomes very tough. It is important because the result is not the best for us and we came here to take points for us, to give a good performance and take points is the most important thing, of course. The result is not the best. I saw something is important in my team that we can change, but the result is not the best. Arsenal have moved into second place after a 2 1 win against burnley at the emirates. Alexis sanchez the hero of the hour coolly slotting a 97th minute spot kick. Shkodran mustafi had opened the scoring for arsenaljust before the had opened the scoring for arsenal just before hour mark, but the gunners reduced to ten men when granit xhaka was sent off five minutes later. It looked like two points dropped for the home side when andre gray equalised for burnley from the penalty spot in the third minute of added time. Arsene wenger sent to the stands for protesting the decision. Luckily for arsene, sanchez stepped up to give his side the win. It was a very difficult one for us because we played with ten men. They played well as well, it was always a very intense game. In the end we got three points, what we wanted, but maybe much less comfortable than we could have envisaged at some stages during the game. Defending champions leicester citys sorry season continues. They lost 3 0 at southampton. Leicesters total of 21 points from 22 games is the joint worst tally for a reigning top flight champion. They were totally outclassed by the saints, who snapped their run of four Straight League defeats. Southampton are up to 11th, while leicester stay 15th. The performance wasnt good. It is my fault. I wanted to change the shape of my team and the two last matches against chelsea i played with three on the back. Today i played with a midfielder. And my players didnt understand my idea. A good game. The possibility to finish off this game like before, with a lot of opportunities and chances for us. Without leaving for them opportunities to score. It is perfect for us. There was a seven Goal Thriller in spain as sevilla cut real madrids lead at the top of the Primera Division tojust a point, while barcelona arejust one point further behind in third after a thumping 4 0 win over eibar. Barcas msn strike force of messi, suarez and neymar were all on the scoresheet, as the Catalan Giants keep pace with the leaders, while sevilla will be relieved to have left osasuna with maximum points with a 4 3 win, although they probably wont have wanted to have served up such a feast for the neutrals against the leagues bottom club. Meanwhile, over in italy, juventus bounced back from last weekends defeat at fiorentina, to beat lazio 2 0. La juve top of serie a, but roma are hot on their heels. Theyre just a point behind the old lady, after a slender win over cagliari. There was also an eighth successive win in all competitions for internazionale, who are up to fifth. Burkino faso and cameroon are the latest teams to have booked their place in the Quarter Finals of the Africa Cup Of Nations. But its a sad end to the tournament for the hosts who are out. Piers edwards reports from gabon. Gabon are only the fourth Africa Cup Of Nations post to go out in the group stage and not think tunisia in 1994 was that on record. But for gabon it was all nearly so different. After four minutes their captain and star Player Missed a glorious opportunity and then in stoppage time the post was hit. An agonising finish as gabon crashed out. Meanwhile, cameroon go through as Group Runners up and will play senegal in an enticing quarter final. In another game, the keener faso advance as group a winners. Burkina faso. After recent president ial elections, the opposition spoke of a boycott on the Africa Cup Of Nations. That will now come evermore into focus now that the people here dont have to get behind their team. So, confirmation of those results an early exit from the tournament for gabon. All eyes on the usa on sunday as the championship games of the nfl take place. Atlanta are through to their second ever superbowl, after thrashing green bay 44 21 in the nfc matchup. Quaterback matt ryan was outstanding from the very start and he threw for four touchdowns and even ran one in himself. It was a big team effort as the atla nta it was a big team effort as the atlanta defence was dominant as well. Rhey head to the superbowl for the First Time Since 1999. Tom bradys new England Patriots are at home to the Pittsburgh Steelers in the afc and its the patriots who lead, its 27 9 in the third quarter. And after rain washed out the entire third day of the second test between new zealand and bangladesh in christchurch, play is underway. New zealand are all out for 354 in reply to bangladeshs first innings total of 289. Henry nicholls falling just two runs short of his century. Bangladesh did lose an early wicket in their second innings, and its a big one. Their star batsman and captain Tamim Iqbalwent just eight runs. Tommy fleetwood has won the abu dhabi championship, his Second European tour title. The englishman, who started a shot behind the overnight leader, finished on 17 under par in a round that contained four birdies and this fantastic chip in for an eagle. Fleetwood finished a shot ahead of us open champion dustinjohnson and spains pablo larrazabal. The victory lifts him from a ranking of 102 in the world to just outside the top 50. Ronnie osullivan has won a Record Seventh Masters Title after he had to come from behind to beat joe perry ten frames to seven in the final at the alexandra palace, in london. Perry playing in his first triple crown final at the age of 42, he led 4 1, but missed a straightforward red for a 5 1 lead. Osullivan pouncing on the mistake to win seven frames in a row and he never looked back. He defends his title and moves ahead of stephen hendrys six masters wins. The bbc understands Bernie Ecclestone could step down from his position as formula 1 Chief Executive as soon as this week. The move would end ecclestones remarkable 40 year reign in the sport. American Company Liberty media is on the brink of completing its Takeover Of F1 and wants a revamp which could see ecclestone eased aside. Thats all the sport for now. But from me, marc edwards, and the rest of the sport today team, goodbye. Some pretty stark contrasts in Weather Conditions for part two of the weekend across the uk. Some areas saw some brilliant sunshine, again after a cold, frosty start. But other areas stayed cloudy, and, where it was cloudy, you had the mist and murk, and some low cloud as well, like this Weather Watcher picture shows in monmouthshire. Now, through the course of the night things will turn dryer. Any light rain, some sleet and snow, clearing away, and then a fairly widespread frost developing. Certainly, where you keep the cloud, not quite as cold. But there will be some really cold spots, and one thing we are concerned about through the course of the night is developing fog. Freezing fog in places, particularly across central, southern and south eastern areas, and it is likely to become pretty extensive and dense towards the end of the night, so it could cause a few problems for the monday morning commute. Keep tuned to bbc local radio, go online for the latest update. There is likely to be some travel disruption, and potential disruption to the major airports across the south east, as well, so give yourself extra time if you are heading out. That fog could really be quite dense, freezing fog as well, so it is going to be really cold. A little less fog, i think, in the far south west, towards wales. And here, with clear skies, we could see a little bit of sunshine through the course of the morning. A little bit of fog as well further north, quite patchy in nature, potentially not quite as widespread as it will be across the south and the south east, but a cold start for scotland and northern ireland. But at least here, to compensate, there should be some good spells of sunshine. And then, through the day, the winds remain light, the fog may be slow to clear, or even stubborn to clear at all across the south east, and where it does so it will remain cold and grey throughout the day. But actually, for many areas, central, northern and Western Areas, it is going to be a pretty good looking day. Where we have sunshine in the forecast it will be quite chilly, especially where that fog lingers on across central and south eastern areas. Then, into tuesday, almost a repeat performance. We start off with some pretty dense, freezing fog through central, southern and eastern areas, tending to lift through the day. Some sunshine developing across the west. A bit of a change taking place, increasing breeze, maybe a bit more in the way of cloud and a few spots of rain. But slightly milder air pushing in, you will notice. Temperatures just making double figures through tuesday afternoon. But again, across the south east, it could be quite chilly, especially where the fog lingers on. Here is the Pressure Chart to show you what is going on in the middle part of the week. High pressure just holding on across the south east. You can see tightly packed isobars, certainly across the west, where a Weather Front will be flirting with Western Areas to cause bigger spells of rain. So we will be losing the fog, it will be clearing away through the course of the week, as we pick up stronger winds. That wind will be chilly at first, certainly for many areas across the south east, but then turning milder by the weekend. Welcome to bbc news, broadcasting to viewers in North America and around the globe. Im gavin grey. Our top stories claims in the gambia that 11 million in state money is missing after departure of long time leader yahya jammeh. We have a special report. This is what democracy can look like, a dictatorial leader of 22 years peacefully leaving the country after a general election. The white house begins talks to move the us embassy in israel from tel aviv to jerusalem. The battle for the french left benoit hamon emerges as favourite to be the socialist partys candidate in the upcoming president ial election. Choose life, choose a