Cardiff - South Africa paceman Dale Steyn bowled at full intensity in the nets on Wednesday, raising hopes he will be fit for the crunch Champions Trophy game against West Indies on Friday.
Steyn missed the Proteas' opening two matches of the tournament with a side strain, but came through the side's net session in which he bowled at full pace.
"Dale is progressing quite well, he came through his net session today without any discomfort but the challenge is to watch him overnight to see if he wakes up with any stiffness," team manager Mohammed Moosajee said.
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"If he comes through tomorrow's (Thursday) net practice he should be available for selection."
South Africa lost their Group B opener to India by 26 runs, but bounced back with a 67-run win over Pakistan on Monday.
They need to beat West Indies in Cardiff to reach the semi-finals.