Burundi moved to the top of Group D of the 2014 African Nations Championship (CHAN) after they stunned Mauritania 3-2 in Durban with a late winner.
Burundi lead the standings with four points.
Gabon are second, also with four points after they defeated Democratic Republic Of Congo 1-0.
DR Congo have three points, whilst Mauritania, who have lost all their matches, have been eliminated from the competition.
Burundi skipper Yamini fired home the winner in stoppage time with a superb long-range strike when it had looked like this match would end in a draw.
Mauritania scored the opening goal in the first minute through Ely Cheikh, when he darted into the box and fired from an acute angle to beat Arthur Arakaza by the near post.
Burundi equalised after 11 minutes courtesy of a free header from inside the box by the lively Fiston Razak Abdul.
Yamini missed a golden opportunity to put his country in front in the 26th minute, but his penalty was saved by goalkeeper Brahim Souleymane.
Burundi went in front in the 61st minute courtesy of Christophe Nduwarugira, before Mohamed Taghiyoullah levelled for Mauritania in the 70th minute.
The final matches in this group will be played on Wednesday with Mauritania tackling Gabon and leaders Burundi up against DR Congo.