The Chelsea attacker helped end her former club's 100 per cent record, while the Blues remain level with Arsenal at the top of the table.
It was always going to happen, wasn't it? Lauren James went back to Manchester United as a Chelsea player this weekend – and, of course, she scored.
That was the Women's Super League's headline fixture on Sunday, but its thunder was stolen by a nine-goal thriller that saw the division's only manager-less team emerge victorious.
Elsewhere, Arsenal extended their record-breaking winning streak and there were also wins on the road for Manchester City and Aston Villa, at Reading and Liverpool respectively, on a day where every away side picked up three points.
As the league action now pauses for the year's final international break, GOAL looks at the winners and losers from this weekend's action…
GettyWINNER: Lauren James
On her return to the stadium where she made her name as one of England's most promising young talents, it just felt inevitable that Lauren James would score this weekend.
The 21-year-old spent three seasons with Manchester United but left for Chelsea, her childhood club, last summer. In her debut campaign, though, she didn't see many minutes as the club tried to get her "right" after a number of niggles.
"Lauren had a tough season last year, coming here off the back of a lot of injuries that she had with Manchester United and maybe having to play in certain games when she wasn't 100 per cent fit," the Blues' technical director, Paul Green, said on Friday.
"[Now], we're really seeing the real Lauren James, the real quality that she's got. We're certainly all excited for what's to come from her in the present and what's to come from her in the future."
On Sunday, she showed that with a brilliant goal that put Chelsea 2-0 up: a gorgeous side-footed strike from the edge of the box provoking a big celebration from James that saw her kiss the badge in front of the fans that once cheered her name.
"It was sweet," she said afterwards. "I love Chelsea and I'm trying to do my best for them." She's not doing badly at all.
AdvertisementGettyLOSER: Man Utd's defence
When Manchester United welcomed Chelsea on Sunday, they did so as league leaders, as the only team in the WSL yet to concede a goal.
The way they threw away that exceptional defensive record, though, in the first game they haven't won in the division this season, was incredibly disappointing.
Having limited Chelsea's attack for most of the game, Millie Turner – who has been excellent this season – played a terrible ball straight to Sophie Ingle, despite being under no pressure. From there, the Blues showed how effective they are in transition, the midfielder finding Sam Kerr and Kerr, within seconds, finding the back of the net.
With the second goal equally frustrating from a United perspective, as James strolled into the final third completely unmarked to sweep home Kerr's pass just four minutes after the opener, the hosts were the architects of their own downfall in their first WSL defeat of the season.
GettyWINNER: Jordan Nobbs
It was less than two weeks ago that Jordan Nobbs made her first start of the season for Arsenal but the form she has showcased since has been so good it has earned her a recall to the England squad.
It started with a breath-taking volley in the Women's Champions League victory over Zurich, then, a few days later, she came off the bench against West Ham and levelled the scores within seconds – setting her team on the way to victory.
On Sunday, she wasn't actually on the scoresheet, but the performance she put in highlighted the other wonderful qualities she possesses. Sporting the captain's armband, Nobbs was the conductor as the league leaders dominated a struggling Leicester in a 4-0 win, with only Beth Mead creating more chances than her on the day.
It was a classy display that will have impressed England head coach Sarina Wiegman and, now, the midfielder will hope she gets the minutes to continue this wonderful form over the international break.
GettyLOSER: Leicester
It's been a turbulent week for Leicester. Last Sunday, they lost a huge six-pointer to the only other team in the WSL without a point to their name, Reading, despite leading the match as late as the 89th minute.
On Thursday, the club announced it had parted ways with Lydia Bedford because of their difficult start to the campaign. Former Everton boss Willie Kirk – appointed director of women's and girls' football earlier this year in what looked like a great move for the Foxes' future – quickly switched his role to take her place.
His chances of getting off to a winning start were always slim, though, as Leicester welcomed Arsenal, on a league-record win streak, to the King Power.
As expected, the Gunners cruised to victory. The result compounded a tough few days for a side in real trouble.
The good news is that the international break is here now. It will give Kirk some much-needed time to work with this group. He'll need to do so quickly, too, before other teams near the bottom start to pull away from Leicester.