Cricket Australia confirmed on Wednesday the games are going ahead as planned with crowds set to be reduced to 50 per cent of capacity.
Which of the Sixers or the Thunder will be able to host a home finals match is yet to be determined.
The news comes after 18 new local cases were reported on Wednesday in NSW.
NSW Premier Gladys Berejiklian said the third Test match was safe to proceed at the SCG next Thursday with a 50 per cent capacity because it was not a confined space.
“The best health advice tells us outdoor, ticketed, seated events are safer than household gatherings, and that’s just a fact,” she said.
Sixers star Jack Edwards said it would be disappointing if his side was unable to play at the SCG, but believes the squad is ready for a last-minute change if required.
“For us, I think it’s just about getting on with the job,” he said. “Our team is very flexible in that regard.”
On Tuesday night, the Sixers claimed yet another thrilling final-over win against the Renegades, after beating the Stars on Saturday night with just one ball to spare.
Edwards said the high-pressure run chases had instilled another level of confidence in the table-topping squad.
“It just takes a few amazing individual performances at the back end there and you’ve won a game,” he said. “We won’t get too far ahead of ourselves in that regard … hopefully next time we’ll chase it down with two overs to go.”
The Renegades clash was saved in the last minute by West Indies captain Jason Holder, who stepped up with 16 runs needed in the final over.
Holder was with the Sixers on a three-game contract and returned to the Caribbean on Wednesday, ending his Big Bash experience.
“It is a shame we couldn’t have him around for a bit longer,” Edwards said. “Everyone was over the moon because he’s such a good guy and has been so good around the group in only the three games that he’s played, so he’s certainly left a mark.”
Sarah is a journalist for The Sydney Morning Herald.