Five facts on the 2015 Africa Cup of Nations quarter-final between Ghana and Guinea in Malabo on Sunday:
-- The Black Stars of Ghana have had a clear advantage over the Syli Nationale (national elephant) of Guinea in five previous Cup of Nations meetings, winning three and drawing two.
-- Another boost for four-time champions Ghana is that they had the better of Guinea in 2015 qualifiers, winning 3-1 at home and drawing 1-1 away.
-- However, the FIFA rankings suggest it could be very close at Estadio de Malabo with Ghana fifth in Africa and 37th in the world and Guinea sixth in Africa and 39th in the world.
-- Guinea will be seeking a first Cup of Nations quarter-finals victory having lost at that stage to Mali, Senegal and Ivory Coast in consecutive tournaments from 2004.
-- Ghana have won six and lost three previous Cup of Nations quarter-finals with recent last-eight results encouraging as they defeated hosts Angola in 2010, Tunisia in 2012 and Cape Verde two years ago.