Bobby Zamora delivered right on time to win Wednesday night's high-octane Carling Cup clash against West Ham.
The striker, who spent time at West Ham as a schoolboy, bagged his first goal for the club since his summer switch from Brighton just two minutes into extra time.
Zamora took Robbie Keane's pass and held off Anton Ferdinand before drilling low past England goalkeeper David James to book our place at home to Manchester City in the fourth round.
The win was just about deserved in terms of possession although West Ham will reflect on creating the best chances in normal time. Rob Lee hit the inside of the post in the first half and Kasey Keller denied Jermaine Defoe when he was clean through after the break.
With 4,000 visiting fans in a full house, the atmosphere crackled from the off and was matched by a frantic first half - unfortunately, the energy was high but the goalmouth action low.
Christian Ziege came in for his first start since Boxing Day with Ledley King in midfield, Rohan Ricketts and Gary Doherty also back in.
It took until the 14th minute for the first effort on goal and although we generally had the better of the possession, West Ham came closest to breaking the deadlock via that Lee chance in the 37th minute.
Keane's trickery led to our best chance after 26 minutes. He held off Kilgallon before laying the ball back to Dalmat - the Frenchman's shot was goalbound before it clipped off Dailly's foot and wide.
Hammers then came within a fraction of opening the scoring. Defoe lobbed a clever pass into the breaking Lee, he took it first time only to see the ball cannon back off the inside of the post into Keller's arms.
Incredibly, the pace was maintained in the second half as both sides went after the win.
But clear-cut chances remained at a premium. Again, West Ham had the best chance when Defoe spun away from Doherty and Gardner but Keller stood tall and saved to his right.
Mabizela came on for Dalmat and Ziege hobbled out of the action, replaced by Blondel, as we started to gain the advantage again.
James was out quickly to deny Keane from Blondel's pass and Zamora brought the best out of the England keeper with a stinger from 25 yards, tipped over.
There was a scare in injury time when Defoe and Garcia found themselves clear in the box but they dallied over the chance and neither got a shot in, Keller again out quickly to tidy up.
Extra time continued where normal time left off - James denied Zamora within seconds but the key breakthrough followed a minute later.
Keane found Zamora who controlled well, held of Ferdinand and shot low past James at his near post.
The game was stretched now and the keepers excelled - Keller at full stretch to tip Hutchison's drive wide and an almost identical from James to deny Postiga.
James blocked again from Zamora and Ferdinand threw himself in to block Postiga.
Into the second half and Spurs hearts skipped a beat when Dailly's header was flicked over by Keller but, generally, chances were again few and far between.
14mins: After a frantic start, the first effort on goal. Decent chance, Konchesky into Zamora, left side of box, took shot early but dragged across goal.
19mins: Early ball in from Ricketts, loose ball fell to Zamora, fashioned a shot deflected into James' hands.
20mins: Dalmat flashed shot high and wide from 25 yards.
21mins: SUB. Ferdinand for injured Stockdale.
24mins: Brilliantly timed tackle from Doherty to deny Lee's burst into box.
26mins: OFF LINE. Keane trickery and cutback to Dalmat, 12 yards out, Dailly outstretched leg flicked ball away.
28mins: Keane away from Kilgallon, into box, curler into side-netting.
33mins: Konchesky into box, tight angle, James always in control.
37mins: WOODWORK. Defoe clever lobbed pass to Lee, first-time effort hit inside of post and bounced back into Keller's arms.
44mins: Ziege free-kick always going over.
Half-time: Spurs 0-0 West Ham
50mins: Positive drive from Etherington, slipped ball into breaking Lee who couldn't gather the pass.
53mins: Zamora and Keane combined well, Keane into supporting Konchesky, dragged shot well wide.
57mins: SUB. Mabizela for Dalmat.
60mins: SUB. Blondel for limping Ziege.
63mins: Teasing Konchesky cross flicked off Dailly's foot and somehow away from danger.
65mins: CHANCE/SAVE. Defoe spun away from Doherty and Gardner onto Carrick threaded pass, completely through in area, Keller stood big and saved to his right.
67mins: SUB. Garcia for Lee.
73mins: Hutchison free-kick deflected just over.
76mins: CHANCE. Blondel precise pass gave Keane shooting chance in box, James out quickly to block.
76mins: SUB. Postiga for Ricketts.
80mins: Cracking Blondel cross diverted wide by Postiga.
82mins: Zamora run and shot tipped over by James.
84mins: Carr cut in from right, left foot shot arrowed over.
Injury time: Defoe and Garcia suddenly free in the box but dallied and neither got a shot off.
Injury time: YELLOW. Etherington for foul on Carr.
Full-time: Spurs 0-0 West Ham
Extra time: 1st half
1min: CHANCE. Zamora denied by James.
2mins: GOAL. Zamora in again, this time made no mistake. Turned Ferdinand, drilled shot from left-side of box inside James' near post. 1-0.
7mins: SAVE. Keller at full stretch to deny Hutchison from left side of box after clever back heel from Garcia.
8mins: SAVE. Almost identical save from James as Postiga got the better of Ferdinand.
11mins: SAVE. Zamora break into box from Blondel pass, left side again, James blocked shot with body.
13mins: Great defending from Ferdinand, threw himself into block to deny Postiga.
Extra time, half-time: Spurs 1-0 West Ham
Extra time, half-time: SUB. Mellor for Horlock.
Extra time, second half
17mins: Keller flicked over Dailly header from corner.
19mins: James at full stretch to hold onto Postiga drive.
29mins: YELLOW. Mabizela for foul on Quinn.
Full-time: Spurs 1-0 West Ham
Line-ups: Spurs: Keller, Carr, Konchesky, Gardner, Doherty, Ricketts (Postiga, 76), King, Dalmat (Mabizela, 57), Ziege (Blondel, 60), Keane, Zamora. Subs: Burch, Bunjevcevic.
West Ham: James, Stockdale (Ferdinand, 21), Quinn, Dailly, Kilgallon, Lee (Garcia, 67), Carrick, Horlock (Mellor, 105), Hutchison, Etherington, Defoe. Subs: Sofiane, Bywater.
Referee: Graham Barber