Tanzania's hopes of qualifying for the 2020 African Nations Championship (Chan) in Cameroon hangs in the balance after losing 1-0 to Sudan on Sunday.
The Etienne Ndayiragije led-side dominated the proceedings with five shots on target compared to the visitors' two. Despite having a better junk of possession, the Taifa Stars were undone by the 61st-minute strike by Yassir Mohamed.
Good defending by the Zdravco Logarusic team ensured the hosts do not find an equaliser.
Sudan need a barren draw in the second leg at home to qualify for the tournament that will be held in Cameroon.