Black Africa returned to the top of the NPL log after a hard fought 1-0 victory against Blue Waters in Walvis Bay.
Both teams had several scoring chances with Muna Katupose, Leroy Adams and Klaas Blom coming close for BA, while Hendrik Somaeb was dangerous for Blue Waters, but the score remained goalless at the break.
Black Africa midfielder Denzil Haoseb finally broke the deadlock midway through the second half when he scored from a corner.
Somaeb was once again denied by Grootboom in the final stages as BA held on for the win which sees them replacing Tigers at the top of the log. Both teams are on 28 points but BA have a better goal aggregate.
African Stars thrashed Rundu Chiefs 5-0 at the Sam Nujioma Stadium in Windhoek.
Striker Heinrich Kazerua led the way with a hat trick and already opened his account after only 5m, while Johannes Seibeb made it 2-0 when he stabbed home a cross by Mcbride Ndjavera shortly before halftime.
Kazerua once again struck with an early goal in the second half while Meraai Swartbooi made it 4-0 when he stabbed in a cross by Edwin Korukuve on 75m.
Kazerua completed his hat trick on 84m when he beat the offside trap and put a through ball into an empty net.
The victory puts Stars into third position on 26 points, two points behind the leaders.
In the only other match on Saturday, Ramblers beat Eleven Arrows 2-0 in Walvis Bay, with the goals coming via Clemens Awiteb and Kennedy Ihuhua.
It was Arrows' 10th defeat of the season and they remain second last on the log, while Ramblers move up to seventh position on 18 points.
Blue Boys play United Starts in Rundu on Sunday.