Easy as you like, Eden Hazard waits for Wojciech Szczesny to commit and simply rolls the ball into the opposite corner.

Image source, Reuters

The referee points to the spot after Eden Hazard, in the area after a jinking, surging run, is brought down by Laurent Koscielny.

BBC Sport chief football writer Phil McNulty at Stamford Bridge

"All very unseemly on the touchline at Stamford Bridge. Arsene Wenger moves and gives Jose Mourinho a very clear shove after Chelsea's manager gives his view on a foul on Alexis Sanchez.

"No love lost between the pair but let's not have fisticuffs chaps. Wenger retreated to his corner smiling, as if he had taken the first round."

Tottenham strike first at the Lane - Emmanuel Adebayor producing the goods down the left, passing to Nacer Chadli who lays the ball off to Christian Eriksen on the edge of the area and the playmaker unleashes a low shot which beats Fraser Forster at his near post.

Image source, AFP

Thibaut Courtois is going to have to come off here. Remember, he was caught on the side of the head by Alexis Sanchez's trailing leg earlier on. He was deemed fit to continue, but now he's signalled that he needs to come off. Petr Cech is applauded onto the pitch as the Belgian's replacement.

Image source, Getty Images

Spurs go close with another long range effort. This time it's Christian Eriksen and his 20-yard shot is saved by Southampton keeper Fraser Forster but not convincingly as he fails to gather it and watches the ball as it trickles wide.

Former Scotland international Pat Nevin
BBC Radio 5 live

"I'm a big fan of Ryan Bertrand but that was a really, really nasty challenge on Kyle Naughton. That could have been a leg-breaker. The strange thing is that none of the other players were moaning about it.

"Part of me is hoping this game slows down a little bit so the quality players can get their foot on the ball. We haven't seen much from Christian Eriksen yet."

Arsene Wenger is incensed when Gary Cahill clatters Alexis Sanchez. He exchanges words with Jose Mourinho, who tells the Gunners boss to get back to his technical area. Wenger responds by pushing Mourinho quite forcefully and the referee, Martin Atkinson, has to tell the pair to calm down. I'll be honest... The Special One looked a little intimidated when Wenger started getting angry.

Image source, Getty Images

Mark Goddard:, external Not happy at some Arsenal fans booing Cesc Fabregas. He'd be back with us if we'd tried to buy him. Not his fault.

Manchester United manager Louis van Gaal on Luke Shaw's injury: He has a dead knee. He could have made it worse, so that is why he stepped out."

Image source, Getty Images

BBC Sport chief football writer Phil McNulty at Stamford Bridge

"From relatively polite beginnings, the Arsenal fans have warmed to the task of directing abuse in the direction of Cesc Fabregas. There has not been much else to capture the attention of either set of supporters in the early stages of what might be politely termed as 'sparring'."

Manchester United defender Luke Shaw:, external "Wow David De Gea was unbelievable today! Thank you my friend for the penalty save."

Tottenham are forced into a change when Kyle Naughton is caught on the ankle by Ryan Bertrand's strong tackle. Eric Dier replaces the full-back.

Arsenal continue to see more of the ball, but the moment they lose possession Chelsea burst into life and try and hit the Gunners on the counter. Danny Welbeck appears to be drifting out to the left.

Manchester United goalkeeper David De Gea to BBC Sport: "What was my most important save? Maybe the penalty. Every save is important but the team played very well. I think the younger players in the team will learn from these type of games. The team and the manager need to look forward."

Image source, AP

Manchester United's Angel Di Maria to BT Sport: David [De Gea] is the guy who deserves the man of the match award rather than myself. He made some very important saves. It's great and very important for Falcao to score. Not only him but the whole team is on the right road now. I think we're pretty much on the right track."

Erik Lamela goes close for Spurs. The Argentine runs on to a Christian Eriksen pass and races to the Southampton goal before unleashing a low 22-yard shot which is touched just wide by keeper Fraser Forster. Moments later, Danny Rose escapes with a severe telling-off after crunching Dusan Tadic on the halfway line. He could easily have been shown yellow.

Image source, EPA

Manchester United manager Louis van Gaal to BBC Sport: "Again we were waiting for the signal of the referee to end the game. Everton got chances outside the box and they had good shots, but David De Gea was fantastic.

"It was not easy for him because he had a lot of players in front of his view. Despite that he stopped good and speedy shots. I was very pleased with his performance.

"Falcao was forcing himself last week against West Ham. I told him to be satisfied about his performances and that the goals are coming. The goals are coming! He will be even better after the international break."

Former Scotland international Pat Nevin
BBC Radio 5 live

"There is a really good pace about this game. There is a lot of closing down and very little space for the players. Southampton are probably slightly on top, but Younes Kaboul has been having an interesting game so far. He's been marking Graziano Pelle very well, and making some heavy clearances, but he just turned in to a jinky winger for a moment there."

There's momentary concern for Thibaut Courtois at Stamford Bridge, with the big Belgian suffering a head injury when he collides with the knee of the onrushing Alexis Sanchez. Thankfully, after 60 seconds or so of treatment from the physio, the big keeper is cleared to continue. Sit back down, Petr.