ICC World Twenty20 Group D: New Zealand v South Africa
Venue: Lord's Date: Tuesday, 9 June Start: 1730 BST
Coverage: Test Match Special commentary on BBC Radio 5 Live Sports Extra, Radio 4 LW, Red Button and online, text commentary on BBC Sport website & mobiles. Live on Sky Sports with highlights on BBC2 and online at 2320 BST
Vettori is a key player for the Black Caps
New Zealand captain Daniel Vettori will undergo a fitness test ahead of Tuesday's ICC World Twenty20 match against South Africa at Lord's.
Vettori missed the seven-wicket victory over Scotland after falling on his shoulder in Friday's practice session.
The 30-year-old left-arm spinner has since had a cortisone injection.
"Hopefully he will be fit. If not, we have got to get our head around ways we can operate without him," said vice-captain Brendon McCullum.
Vettori's team struggled without him against Scotland, with the underdogs scoring 90 after being asked to bat first in a match reduced to seven overs per side.
However New Zealand's nerves were calmed when McCullum and Jesse Ryder shared a half-century opening stand inside three overs.
McCullum admitted: "We have all fingers crossed that we get such a good player, and our captain, back for the next game and the duration of the tournament."
McCullum has also heaped praise on Ryder, who hit 31 off 12 deliveries against Scotland - just days after his cousin was killed in a car crash.
"It has been a pretty tough time for him given that he has lost a relative in a way as tragic as what we saw," said McCullum.
"He showed an amazing ability to concentrate on his task and feel at home out in the middle.
"He has been working incredibly hard and that was hopefully just a glimpse of what we see from him throughout this tournament."