Leeds United's Premier League game against Arsenal was halted after 23 seconds of play because of a power cut at Elland Road.
Referee Chris Kavanagh lost communication with the video assistant referee officials.
Goalline technology was down too.
With players standing around and fans not knowing what was happening, Kavanagh spoke with both managers, Leeds' Jesse Marsch and Arsenal's Mikel Arteta, on the touchline.
An announcement inside the stadium said there had been a "power cut", before Kavanagh led the two sets of players off the pitch after a wait of around 12 minutes.
The players and officials returned to the pitch around 20 minutes later for a warm-up, before the 14:00 BST kick-off resumed at 14:40.
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Leeds United
Squad number1Player nameMeslier
Squad number25Player nameKristensen
Squad number5Player nameKoch
Squad number6Player nameCooper
Squad number21Player nameStruijk
Squad number12Player nameAdams
Squad number8Player nameRoca
Squad number7Player nameAaronson
Squad number11Player nameHarrison
Squad number23Player nameSinisterra
Squad number19Player nameRodrigo
No players have been substituted yet
Arsenal
No players have been substituted yet
Line-ups
Leeds
Formation 4-2-3-1
1Meslier
25Kristensen5Koch6Cooper21Struijk
12Adams8Roca
7Aaronson11Harrison23Sinisterra
19Rodrigo
1Meslier25Kristensen5Koch6Cooper21Struijk12Adams8Roca7Aaronson11Harrison23Sinisterra19RodrigoSubstitutes
2Ayling3Firpo9Bamford10Summerville13Klaesson14Llorente30Gelhardt42Greenwood43KlichArsenal
Formation 4-2-3-1
1Ramsdale
4White12Saliba6Gabriel18Tomiyasu
5Partey34Xhaka
7Saka8Ødegaard11Martinelli
9Gabriel Jesus
1Ramsdale4White12Saliba6Gabriel18Tomiyasu5Partey34Xhaka7Saka8Ødegaard11Martinelli9Gabriel JesusSubstitutes
3Tierney14Nketiah16Holding17Cédric Soares21Ferreira Vieira23Sambi Lokonga24Nelson27Oliveira Alencar30TurnerLive Text
First Half ends, Leeds United 0, Arsenal 1.
Attempt saved. Martin Ødegaard (Arsenal) left footed shot from outside the box is saved in the bottom right corner. Assisted by Gabriel Jesus.
Bukayo Saka (Arsenal) wins a free kick on the right wing.
Foul by Pascal Struijk (Leeds United).
Attempt missed. Jack Harrison (Leeds United) left footed shot from outside the box is close, but misses the top left corner. Assisted by Brenden Aaronson.
Foul by Thomas Partey (Arsenal).
Jack Harrison (Leeds United) wins a free kick in the attacking half.
Offside, Leeds United. Rodrigo tries a through ball, but Rasmus Kristensen is caught offside.
Foul by Bukayo Saka (Arsenal).
Pascal Struijk (Leeds United) wins a free kick in the defensive half.
Foul by Ben White (Arsenal).
Luis Sinisterra (Leeds United) wins a free kick in the attacking half.
Gabriel Magalhães (Arsenal) wins a free kick in the defensive half.
Foul by Tyler Adams (Leeds United).
Goal! Leeds United 0, Arsenal 1. Bukayo Saka (Arsenal) right footed shot from a difficult angle on the right to the high centre of the goal. Assisted by Martin Ødegaard.
Attempt saved. Martin Ødegaard (Arsenal) left footed shot from outside the box is saved in the bottom right corner.
Gabriel Jesus (Arsenal) wins a free kick in the attacking half.
Foul by Robin Koch (Leeds United).
Attempt blocked. Marc Roca (Leeds United) right footed shot from outside the box is blocked.
Corner, Leeds United. Conceded by Gabriel Magalhães.
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