England v South Africa, 2nd Investec Test, Headingley, 3rd day August 4, 2012

Kallis joins Smith on injury list

Graeme Smith, the South Africa captain, will field with a strapped knee for the rest of the Headingley Test after being injured on the third day. But, South Africa have picked up another injury as well. Jacques Kallis developed lower back spasms overnight and will not bowl or field in the current innings.

That brings to three the number of injuries picked up in this match after Alviro Petersen suffered a grade one strain of his right hamstring. None of the wounded will be able allowed a runner - in keeping with the ICC's playing conditions change last year - and Petersen and Kallis will only be able to bat at No.7 and No.8 because their injuries are internal or after the amount of they have been off the field.

Smith slid while fielding on the backward point boundary late in the afternoon and dug his left knee dug into the outfield. He struggled to get up, hobbled for a few paces and then called for on-field treatment. Although Smith was able to stand, he did not stay on the park any longer and left with assistance from the physiotherapist, limping.

AB de Villiers took over captaincy duties for the remaining four overs of play and Robin Peterson came on to field. South Africa were already fielding one substitute, Faf du Plessis, who replaced Petersen. Peterson will now field in Kallis' place.

South Africa may be forced to depend on Jacques Rudolph to open the batting for them. Rudolph played in that position for Yorkshire and in four Tests last year. The rest of the line-up may have to shift one position higher than normal.

Smith has a history of ankle problems and underwent surgery in April. He was not able to play any competitive cricket for more than three months.

He and Kallis are the fifth and sixth South African players to be injured on the current tour of England. Mark Boucher's lacerated eyeball in Taunton ended the veteran wicketkeeper's career, Marchant de Lange's lower back spasms ruled him out for six weeks and his replacement Albie Morkel is currently carrying an ankle injury, which made him unavailable for consideration in this match.

Firdose Moonda is ESPNcricinfo's South Africa correspondent