Cambridge United's Kwesi Appiah starts for Ghana, who make two changes from last time out: John Boye comes into the back four in the other change.

Guinea make three changes, bringing in Djibril Paye, Idrissa Sylla and Abdoul Camara.

Ghana: Braimah, Afful, Rahman, Boye, Mensah, Wakaso, Acquah, Atsu, Dede, Appiah, Gyan.

Subs: Gyimah, Awal, Badu, J.Ayew, Sowah, Rabiu, Asante, Otoo, Dauda, Amartey, Accam, Acheampong.

Guinea: Yattara, Sankoh, Paye, Fofana, Camara, Conte, Cissé, Constant, Sylla, Razzagui Camara, Traoré.

Subs: Yattara, Sylla, Zayatte, Landel, Camara, Keita, Keita, Soumah, Kamano, Diarra, Camara.

Image source, Getty Images

Last night saw the knockout stages of the 2015 Africa Cup of Nations begin with a bang. Compelling, controversial and at times utterly chaotic - and that was just the refereeing.

Watched The Voice instead? Never fear, we'll recap the action for you.

First up, DR Congo staged a stunning fightback to beat neighbours Congo 4-2. At 2-0 down with 25 minutes left, they looked to be heading out of the competition, but two goals from Dieumerci Mbokani and one each from Jeremy Bokila and Joel Kimuaki hauled them into the semi-finals.

There was more drama to come. Hosts Equatorial Guinea qualified for the last four amid barely believable scenes of tumult as a hugely controversial stoppage-time penalty gave them an unlikely equaliser against Tunisia, before Javier Balboa's majestic free-kick sealed victory against a team ranked 96 places above them. The match ended with the Tunisians chasing the ref down the tunnel - I'd wager we've not heard the last of it, either.

If today's matches are half as good as those, we're in for a treat.

Image source, @Steve_Crossman

These two Anderlecht team mates are rivals in Malabo today. Ghana's Frank Acheampong and Ibrahima Conte of Guinea had a pre match arm-wrestle which Conte pulled out of with the excuse that "he's too strong for me here but I'll be too strong for him on the pitch."

Acheampong admitted head coach Avram Grant had asked him how to handle Conte but the Ghanaian told BBC Sport: "I couldn't tell him how to stop Ibrahima so I just told him how good a player he is."

So who is the better player? "You can't compare us in the same way you can't compare Ronaldo to Iniesta," says Conte. "We are different players."

Image source, Getty Images

If Ghana are to end their long trophy drought, they'll have to get past Guinea.

Guinea were less convincing in qualifying, drawing all three games 1-1 and requiring the drawing of lots in a Malabo hotel room to progress at the expense of Mali.

The National Elephants may have luck on their side, but they'll need to reverse the formbook if they're to upset Ghana today. They have never beaten the Black Stars at this tournament in five meetings, drawing twice and losing three times.

Guinea have lost their last three Afcon quarter-finals, and if they do win today, it will be their first trip to the last four since 1976.

Image source, Getty Images

Before we get to the action, a quick refresher on how these two teams made it to the last eight.

Ghana set alarm bells ringing when they squandered a 1-0 lead in losing their opening game to Senegal, but Avram Grant's side recovered impressively thereafter, beating Algeria courtesy of a last-minute Asamoah Gyan strike and then overcoming South Africa to qualify as group winners.

The Black Stars are familiar enough with the business end of this tournament, having reached the semi-finals of the last four editions, but they haven't won since 1982. Can they end that long wait this time round?

Hello and welcome to our live text commentary of the 2015 Africa Cup of Nations. Today, we turn our attentions to the two remaining quarter-finals.

Later on, we will see how Ivory Coast fare against the tournament's top-ranked side, Algeria, but first up, it's Ghana against Guinea for a place in the last four.

Image source, Getty Images

Ghana and Ivory Coast. Continental heavyweights. Think of African football, and it is perhaps those two teams which spring to mind above all. The Black Stars and the Elephants. Nations which have given us the likes of Abedi Pele, Samuel Kuffour, Laurent Pokou and Didier Drogba.

Yet for all their pedigree, the painful reality is that these two nations are under-achievers on the big stage. Neither has won an Africa Cup of Nations title since 1992, when Ivory Coast hoisted the trophy for the one and only time in their history.

But for these proud nations, opportunity knocks once again. Awaiting them in the semi-finals are DR Congo (world ranking: 57) and Equatorial Guinea (world ranking: 118). They may never get a better chance to reacquaint their dusty trophy cabinets with some silverware. But before that, they have the small matter of the quarter-finals to negotiate...