Johannesburg - What is a defendable total or even a defendable over in Standard Bank Pro20 cricket?
That is a question that must have given the franchise captains much food for thought after the first three matches all ended in last-ball victories for the side batting second.
Clearly no franchise is going to feel safe - even if their opponents need 20 or more runs going into the final six deliveries.
The fourth match of the competition at the OUTsurance Oval on Wednesday (18:00 start) features the two teams who have not played yet - the Knights and the Dolphins.
It also brings head to head another array of the game's big hitters. The Dolphins possess the biggest and most lethal of all the big hitters in Loots Bosman, while David Miller has also carved out an impressive reputation in this format of the game.
Lined up against them is another of the game's emerging young stars in Rilee Rossouw, as well as veteran Johan van der Wath who comes off a successful Pro20 campaign in New Zealand's equivalent competition.
Don't forget also about Ryan McLaren who has taken over the Knights' captaincy from Cricket World Cup-bound Morne van Wyk and is one of several players who must be in the standby queue in the event of an unfortunate Proteas' injury.
Fixtures for this week:
Wednesday:
Knights v Dolphins, Bloemfontein (18:00)
Friday:
Warriors v Dolphins, East London (18:00)
Highveld Lions v Titans, Johannesburg (18:00)