Originally Posted by Cabinet96
He'll declare before he gets anywhere near. If he gets 150 runs tomorrow, then the team would have got at least 250. 700 is certainly enough for Clarke to declare on
I expect this would happen. Even though there's no real need to declare at 700 either given how quickly they're scoring and given the pitch I would think Clarke will mix up the bowling quite a lot anyway (they have plenty of options to do that) so bowler fatigue shouldn't be a big factor.
The big if is whether Australia actually bat that long, they don't have a great deal left. But you'd think 700 would be probable before tea if they were still going and there's no reason to declare that early because there is a good 1000+ runs left in the match if South Africa bat that long even if they just go at a fairly average Test run-rate.