Issam Jemaa grabbed a hat-trick as Tunisia thrashed 10-man Chad 5-0 in Group K of the 2012 Africa Cup of Nations qualifiers.
Tunisia are now into second spot in the group on goal difference ahead of Malawi, who drew 0-0 in Botswana.
There were goals from Jemaa and Aymen Abdennour before Chad's Didier Mbayi got a straight red card for a foul.
Jemaa scored either side of the break with a goal in between from Oussama Darragi to complete the rout.
Botswana's result secures top spot for the Zebras, who have already booked their place at next year's finals in Gabon and Equatorial Guinea.
Even if Malawi and Tunisia win their remaining games, they cannot now overhaul Botswana's total of 17 points.
Togo, on the other hand, are out o contention - joining Chad on the Group K scrapheap.
Botswana were the first team to qualify for the 2012 finals - having failed in eight previous attempts stretching back to 1994.
This is the only five-team mini-league so the runners-up also qualify automatically.