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England need to get back in the Ashes reckoning in Adelaide in the first day/night Test between the two rivals.
Two previous day-night Tests at this venue indicate a quick resolution, probably inside four days.
Wickets tumble under lights, so it may even come down to which team ends up batting at the wrong time most often.
Whether it is a self-fulfilling mental phenomenon, or something more rational in the conditions, is a moot point - if you are three down at dusk, you could soon be in big trouble.
England are arguably as well-equipped as their hosts to take advantage, and must grab this chance to battle back. If it is 2-0 going to Perth next week, they will be all washed up already.
Teams for the second Ashes Test
England: JE Root (Captain), AN Cook, MD Stoneman, JM Vince, DJ Malan, MM Ali, JM Bairstow (wkt), CR Woakes, JT Ball, SCJ Broad, JM Anderson.
Australia (probable): S Smith (Captain), D Warner, C Bancroft, U Khawaja, P Handscomb, S Marsh, T Paine (wkt), M Starc, P Cummins, N Lyon, J Hazlewood.
Umpires: C Gaffaney (NZ) and A Dar (Pak).
Third umpire: M Erasmus (SA).
Match referee: R Richardson (WI).
Play starts at 3.30am UK time.