" Appiah told cafonline.com.
"I was surprised with what happened to Senegal and I thought they would recover from the first loss but it wasn't to be.
"I wondered why they seemed to play relaxed and only started to play after they were down,Ray Lewis Jersey. I don't know exactly what it was down to but it has made our team stay even more focused. You cannot underrate anyone any more.
"I'm satisfied with the result against Guinea,Jarrett Bush Jersey," Keita said.
Assistant coach James Kwasi Appiah believes Ghana will not become complacent after they watched Senegal crash out of the African Nations Cup.
"Personally, I have been under a lot of pressure but I will continue to assume my responsibilities."
Ghana beat Botswana 1-0 in their opening match thanks to a first-half score by captain John Mensah, who will sit out the match in Franceville.
Co-hosts Equatorial Guinea eliminated Senegal and booked their place in the quarter-finals with a 2-1 win, but Appiah insists the Black Stars are focused on claiming their second victory of the competition against Mali in Group D tomorrow.
"Before the Botswana game we knew it was going to be tough going in Group D and coming with the tag of favourites the other teams would be keen to catch us cold and knock us out,A.J. Hawk Jersey," Appiah told cafonline.com,Tim Masthay Jersey.
However, Mali and Barcelona midfielder Seydou Keita is confident he can shrug off the pressure of leading a young Mali side to victory over the Black Stars and build on their 1-0 win over Guinea.
"We need to continue to play as a team. A team who depends only on individual players will fail, but a team who are united and play for each other, will always win,Bart Starr Jersey.
"We played against a very good team,Randall Cobb Youth Jersey, probably one of the best teams after the first round of matches in this competition.
"Mali will be treated with utmost respect and we will seek to give a thorough performance."
"Luckily we came through with three points but now against Mali we have another tough match ahead.