South Africa face the possibility of going into the ICC World Twenty20 with both their captain and leading fast bowler short of match practice due to hamstring strains.
Skipper Faf du Plessis missed yesterday's five-wicket warm-up win over Bangladesh 'A' and will also sit out today's game against Pakistan.
Dale Steyn left the field after bowling 2.2 overs, also struggling with a hamstring injury.
"Dale Steyn was unable to complete his third over after experiencing tightness in his right hamstring," Cricket South Africa (CSA) confirmed.
"He immediately left the field to receive treatment from physiotherapist, Brandon Jackson.
"Jackson will make a further assessment on the injury tomorrow morning."
Prior to the game, which South Africa won after bowling Bangladesh 'A' out for 116 and then reaching their target with nine balls to spare, CSA confirmed du Plessis' absence.
AB de Villiers led the side and will continue to do so against Pakistan.
"Faf experienced tightness during the third KFC T20 against Australia on Friday evening," team manager Dr. Mohammed Moosajee said.
"Further assessment revealed a Grade 1 strain to his right hamstring.
"He has been receiving intensive treatment and will be rested for the two warm-up matches in an attempt to make sure he is ready for the first match on Saturday."
South Africa begin their campaign against Sri Lanka on Saturday 22nd March.
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