Dean Elgar struck a century as the Northerns Titans ended day one of their match against the Free State Knights in Centurion on 328-7.
The Proteas captain’s 137 came off 191 balls and included 24 fours. He was well supported by Heinrich Klassen, who remains unbeaten on 87 off 95 deliveries.
Nealan van Heerden (4-57) and Migael Pretorius (3-65) picked up the wickets for the Knights.
At St George’s Park, the KZN Dolphins bowled out the EP Warriors for 166, with Ottniel Baartman and Eathan Bosch claiming three wickets each. Jordan Hermann scored 51 for the hosts.
At stumps, the Dolphins were 151-5 after captain Marques Ackerman scored 48 and Jason Smith 44*.
At Newlands, Tony de Zorzi (163) and Kyle Verreynne (144*) hit centuries as Western Province ended day one of their match against the Boland Rocks on 430-5.
De Zorzi was involved in an opening partnership of 137 with Edward Moore (71), before adding 184 with Verreynne for the fourth wicket.
In Potchefstroom, Dominic Hendricks (89), Rassie van der Dussen (45) and Wiaan Mulder (30*) helped the Central Gauteng Lions post 224-5 against the North West Dragons.