A second half goal by Siyethemba Sithebe gave AmaZulu a 1-0 win against Black Leopards at Thohoyandou Stadium on Sunday.
It was a fourth straight win for Usuthu who now move to third on the DStv Premiership log with 37 points, three behind log leaders Mamelodi Sundowns.
Leopards remain rooted at the bottom with 13 points from 21 matches.
In the other league match on Sunday, Bloemfontein Celtic beat TS Galaxy 2-1.
By Ofhani Munyai