Arsenal saved their unbeaten start to the Women's Super League season in dramatic fashion as Vivianne Miedema scored a stoppage-time equaliser against north London rivals Tottenham.
The league leaders trailed after Rachel Williams bundled in the opener, threatening to cause an upset at The Hive.
But Miedema, Arsenal's ever-reliable goalscorer, stepped up once again to nod home a corner and send more than 2,800 fans into a frenzy.
Arsenal had missed several big chances to break the deadlock before Williams' opener - with Katie McCabe and Beth Mead both hitting the woodwork in the first half.
Miedema herself had also come close when she was denied by goalkeeper Tinja-Riikka Korpela, while Mead was a constant threat throughout.
The draw extends Arsenal's league lead to four points but Chelsea can close the gap on Sunday when they face Manchester City (15:00 GMT).
It was another significant result for Tottenham, who backed up a draw with Manchester United with this draw, and who maintain their challenge for a Champions League qualification spot.
Spurs resilient but Arsenal pressure pays off
Katie McCabe had a free-kick clawed off the line after she hit the post in the first halfTottenham boss Rehanne Skinner had demanded a hard-working performance from her side earlier this week - and got it in what was a typically robust performance.
Williams and Graham worked tirelessly off the ball to provide support in midfield as Arsenal dominated possession - but the Spurs pair were also a threat on the break.
And their efforts paid off when the two combined to stun Arsenal, setting up a brilliant finale as the Gunners piled on the pressure in search of an equaliser.
Miedema, who had cut a frustrated figure on numerous occasions, had tormented the Spurs backline with weaving runs and dangerous efforts but to no avail.
But she ultimately delivered, showing the ruthlessness that has made her one of the most prolific strikers in the world.
The title race is opening up in intriguing fashion and should Chelsea close the gap on Sunday, just one point will separate the top two.
Spurs, who should have gone 2-0 up when Ashley Neville missed an open goal from a few yards out, will take huge confidence from this performance, though Brighton remain hot on their heels in fourth place.
'This isn't a surprise to me' - what they said
Tottenham manager Rehanne Skinner: "It's fantastic. Coming into the game, the players have been so focused and diligent. I was hoping, as all managers do, that they pull that together and deliver on that.
"This performance today isn't a surprise to me because of how they work but they had to deliver on the day. It's a great point on my birthday so I'll take that!"
Arsenal manager Jonas Eidevall: "I think the crowd was amazing today. It was a good atmosphere. I think we were coming into the game with a lot of difficult circumstances.
"It was a very physical game, which doesn't allow us to move the ball as quickly as possible. I'm happy with the performance overall."
Line-ups
Tottenham Women
Formation 4-2-3-1
1Korpela
29Neville5Bartrip3Zadorsky6Harrop
12Percival21Clemaron
18Ubogagu16Graham17Simon
10Williams
1Korpela29NevilleBooked at 82mins5Bartrip3Zadorsky6Harrop12Percival21ClemaronBooked at 50minsSubstituted forGreenat 81'minutes18UbogaguSubstituted forAddisonat 63'minutes16Graham17SimonSubstituted forAyaneat 80'minutesBooked at 90mins10WilliamsSubstitutes
2Morgan4Green13Ale14Addison23Ayane25HeepsArsenal Women
Formation 4-3-3
1Zinsberger
16Maritz6Williamson3Wubben-Moy7Catley
12Maanum13Wälti10Little
9Mead11Miedema15McCabe
1Zinsberger16Maritz6Williamson3Wubben-Moy7CatleySubstituted forParrisat 68'minutes12MaanumSubstituted forNobbsat 68'minutes13WältiSubstituted forIwabuchiat 84'minutes10Little9MeadBooked at 82minsSubstituted forFoordat 85'minutes11Miedema15McCabeSubstitutes
4Patten8Nobbs14Parris18Williams19Foord20Boye Sørensen23Iwabuchi29Goldie77HeathReferee:Amy FearnsAttendance:2,896Live Text
Match ends, Tottenham Hotspur Women 1, Arsenal Women 1.
Second Half ends, Tottenham Hotspur Women 1, Arsenal Women 1.
Foul by Jordan Nobbs (Arsenal Women).
Ria Percival (Tottenham Hotspur Women) wins a free kick in the defensive half.
Caitlin Foord (Arsenal Women) wins a free kick on the left wing.
Foul by Josie Green (Tottenham Hotspur Women).
Attempt missed. Leah Williamson (Arsenal Women) header from the centre of the box misses to the right. Assisted by Jordan Nobbs.
Kim Little (Arsenal Women) wins a free kick on the right wing.
Foul by Rosella Ayane (Tottenham Hotspur Women).
Mana Iwabuchi (Arsenal Women) wins a free kick on the left wing.
Foul by Ashleigh Neville (Tottenham Hotspur Women).
Goal! Tottenham Hotspur Women 1, Arsenal Women 1. Vivianne Miedema (Arsenal Women) header from the centre of the box to the high centre of the goal. Assisted by Katie McCabe with a cross following a corner.
Rosella Ayane (Tottenham Hotspur Women) is shown the yellow card.
Corner, Arsenal Women. Conceded by Ashleigh Neville.
Attempt blocked. Vivianne Miedema (Arsenal Women) left footed shot from the left side of the box is blocked. Assisted by Katie McCabe.
Foul by Jordan Nobbs (Arsenal Women).
Kit Graham (Tottenham Hotspur Women) wins a free kick on the right wing.
Attempt missed. Angela Addison (Tottenham Hotspur Women) right footed shot from the right side of the box misses to the left. Assisted by Kit Graham.
Corner, Arsenal Women. Conceded by Molly Bartrip.
Foul by Ria Percival (Tottenham Hotspur Women).
