Cape Town - Dolphin's seamer, Kyle Abbott, has been added to the Proteas T20 squad to play against Australia in the three-match T20 International series starting at St George's Park in Port Elizabeth on Sunday. Dale Steyn has sustained a Grade 1 hamstring strain during the Test at Newlands, and is likely to miss the first two matches while he recovers. "A Grade 1 hamstring strain would usually take between 7-10 days to recover, so Dale is unlikely to be available for the first two matches in Port Elizabeth and Durban," said Proteas team manager, Dr Mohammed Moosajee."At this stage we are hopeful that he will be available for the ICC World Twenty20 and will work towards having him ready for the final T20 against Australia in Centurion."Wayne Parnell and Beuran Hendricks will undergo fitness tests on Saturday to determine their availability for the opening match of the series. Parnell sustained a strain to his right groin during the second Test against Australia, while Hendricks is recovering from a side strain sustained during a Sunfoil series match for the Cape Cobras.The T20 squad will gather for a two-day camp before beginning with their preparations for the series on Saturday.