Manchester City kept up the pressure at the top of the Barclays Premier League with an ultimately convincing 4-1 win over Southampton at the Etihad Stadium.
A controversial Samir Nasri goal and an Edin Dzeko header moments later turned a tight game in City's favour just before the interval after Rickie Lambert's penalty had cancelled out one from Yaya Toure.
Substitute Stevan Jovetic made victory certain before Toure hit a post late on, but for Southampton prime concerns were over a knee injury to 17-goal top scorer Jay Rodriguez.
The England World Cup hopeful was carried off on a stretcher after landing awkwardly midway through the first half and the club, and watching national boss Roy Hodgson, will anxiously await updates.
City eased through the second half, but were sluggish before the break, despite getting off to a perfect start courtesy of Toure's 22nd goal of the season inside three minutes.
Dzeko got the better of Jose Fonte in the box and went down after the defender left a leg trailing for him to run into.
Southampton argued the Bosnian made the most of the contact, but there seemed no doubt it was a foul and Toure calmly sent back-up goalkeeper Paulo Gazzaniga, playing for the injured Artur Boruc, the wrong way.
City could have doubled their lead moments later as they created a clear-cut opportunity for Nasri, but the Frenchman's low drive flew narrowly wide.
Despite their blistering start, City could not maintain the intensity and Southampton, with confidence still intact, clawed their way back into the contest.
City were given a warning as Rodriguez almost picked out Lambert with a dangerous cross and Adam Lallana was unlucky not to bring a Lambert ball under control.
Lambert was only just off-target from a free-kick, but City threatened again when Jesus Navas sliced wide after an appeal for handball against Dejan Lovren was denied.
Play was held up when Rodriguez went down in considerable agony, clutching his knee, after landing heavily when unchallenged.
The player was eventually carried off, to generous applause, on a stretcher, but there were fears his season - and World Cup chances - could be over.
Saints soon regained their composure, although City went close again as Dzeko thumped a header against the bar from Nasri's floated free-kick.
Jack Cork was tripped by Pablo Zabaleta as he burst into the box and Lambert maintained his 100 percent Saints penalty record to tuck home a deserved equaliser.
It might have got worse for City as Morgan Schneiderlin failed to take advantage of a clear opportunity from a corner.
But the visitors were stung as City hit them with two goals in first-half injury time.
They benefited from a huge slice of luck for the first of them as Dzeko flicked a pass from Toure into the path of a clearly offside David Silva.
Silva made the most of the opportunity as he set up Nasri for a simple close-range finish.
Saints boss Mauricio Pochettino complained to the officials and his frustration was compounded moments later as Dzeko headed in a third goal, off a post, from an Aleksandar Kolarov cross.
City wanted another penalty after the restart when a charging Toure went down following a challenge from Fonte and Lovren but this time referee Chris Foy was not interested.
Kolarov had a shot deflected over and Dzeko tested Gazzaniga before horribly miscuing from the rebound.
Gazzaniga saved with his feet from Navas and substitute Alvaro Negredo could not get past Fonte after being played through.
Lambert might have given Saints late hope but drove across goal from a good position before Toure was booked for diving for attempting to win another penalty.
Jovetic added the fourth, four minutes after replacing the influential Silva, when he tapped home a Navas cross after tricky work from the Spaniard.
Toure hit a post from edge of box as City eased towards a crucial victory.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereComments are closed on this article