Women's Champions League standings and permutations: Who needs what to go through on Matchday 4

The UEFA Women's Champions League group stage is at the halfway phase and the first quarter-finalists have been decided following Wednesday's fixtures, with the potential for further teams to join them on Thursday.

We show who could make early progress or is in danger of falling out of reach of advancing from their group. The top two in each group progress to the knockout phase.

Standings are provisional until all group matches have been played and officially validated by UEFA.

Through to quarter-finals

Chelsea
Lyon
Real Madrid

How ties are broken: Regulations

Group A

11 December: Wolfsburg vs Roma, Galatasaray vs Lyon
17 December: Lyon vs Wolfsburg, Roma vs Galatasaray

Lyon are through to the quarter-finals. They will be confirmed as group winners if they avoid defeat against Galatasaray or Wolfsburg do not beat Roma.

Roma will be through to the quarter-finals if they beat Wolfsburg. They will be unable to reach the quarter-finals if they lose by two goals or more.

Wolfsburg will be through to the quarter-finals if they beat Roma by two goals or more. They will be unable to reach the quarter-finals if they lose.

Galatasaray are unable to reach the quarter-finals.

Group B

11 December: Chelsea vs Twente, Celtic vs Real Madrid
17 December: Real Madrid vs Chelsea, Twente vs Celtic

Chelsea are through to the quarter-finals. They will be confirmed as group winners if they beat Twente and Real Madrid do not win, or if Chelsea draw and Real Madrid lose.

Real Madrid are through to the quarter-finals. They will be confirmed in second place if they do not beat Celtic and Chelsea win, or if Madrid draw and Chelsea win.

Twente and Celtic are unable to reach the quarter-finals.

Women's Champions League app

Group C

21 November: Vålerenga vs Bayern, Arsenal vs Juventus
12 December: Bayern vs Juventus, Vålerenga vs Arsenal
18 December: Arsenal vs Bayern, Juventus vs Vålerenga 

Bayern will be through to the quarter-finals if they beat Vålerenga and Juventus do not beat Arsenal, or if Bayern draw and Juventus lose.

Arsenal will be through to the quarter-finals if they beat Juventus and Vålerenga do not beat Bayern.

Juventus will be unable to reach the quarter-finals if they lose to Arsenal and Bayern avoid defeat by Vålerenga.

Vålerenga will be unable to reach the quarter-finals if they lose to Bayern and Arsenal avoid defeat by Juventus, or if Vålerenga draw and Arsenal win.

Group D

21 November: Hammarby vs Man City, St. Pölten vs Barcelona
12 December: Man City vs St. Pölten, Hammarby vs Barcelona
18 December: Barcelona vs Man City, St. Pölten vs Hammarby

Man City will be through to the quarter-finals if they avoid defeat by Hammarby.

Neither Barcelona nor Hammarby can go through or be eliminated on Matchday 4.

St. Pölten will be unable to reach the quarter-finals if they do not beat Barcelona.

Group standings