Super rugby unlocked
South African Super Rugby fixture falls victim to virus
One Puma tested positive early in the week and two more after subsequent tests, and all three have been quarantined for 10 days.
Victory for frontrunners the Bulls left them well placed to win the single-round competition which signalled the return of rugby to South Africa last month after a six-month break due to COVID-19.
The decision was taken as part of prescribed precautions advised by the National Institute for Communicable Diseases (NICD) to limit the risk of further infection in the rugby community.
Steven Kitshoff and fellow Stormers front-row forward Scarra Ntubeni have gone into self-isolation after coming into contact with a person who tested positive for COVID-19.
It was the Stormers first match since rugby in South Africa was suspended due to the coronavirus pandemic.
Morne Steyn, who new Bulls coach Jake White calls his "general", had the final say with his penalty ensuring the Bulls of victory but not preventing the Griquas from taking a losing bonus point.
The men from Johannesburg also welcome back eight players who were part of the Springbok Showdown in Cape Town last weekend, including captain Elton Jantjies, Carlu Sadie, Marvin Orie and Vincent Tshituka.