Amazulu 2-1 Richards Bay
Thabiso Kutumela gave Usuthu the lead just before the half hour mark at the Moses Mabhida Stadium in Durban.
The visitors however hit back through Sanele Barns five minutes before the halftime break.
The second half was a cagey affair and just as it seemed tha game would end in a stalemate, Ekstein popped up to net a late winner.
Sekhukhune 0-0 Polokwane
Both teams could not convert opportunities in the final third as a goalless stalemate was played out at the Peter Mokaba Stadium in Polokwane.
The result would be a setback for both teams as they chase a top-eight berth at the end of the season.
Magesi FC and Chippa United battled to a thrilling 2-2 draw at Seshego Stadium while Marumo Gallants fell 1-2 to Golden Arrows at Lucas Masterpieces Moripe Stadium in the Betway Premiership.
The Betway Premiership title race took another dramatic turn after Orlando Pirates were held to a 1-1 draw by Siwelele FC at the Orlando Amstel Arena on Saturday afternoon.
Kaizer Chiefs winger Asanele Velebayi says he is embracing the pressure that comes with representing one of South Africa's biggest clubs, insisting it is part of the responsibility of wearing the AmaKhosi jersey.
Orlando Pirates defender Nkosikhona Ndaba has urged his teammates to be more ruthless in front of goal as the Buccaneers gear up for a crucial Betway Premiership clash against Siwelele FC at the Orlando Amstel Arena on Saturday
