Centurion: Indian wicketkeeper Wriddhiman Saha was today ruled out of the third and final Test against South Africa due to a hamstring injury and will be replaced by Dinesh Karthik in the squad.

Saha, who is not part of the team playing the ongoing second Test here, picked up the injury while training on January 11.

The third and final Test of the series is scheduled to be held in Johannesburg from January 24.

"The All-India Senior Selection Committee has named Dinesh Karthik as the replacement for Wriddhiman Saha for the third and final Test against South Africa. He is set to join the team before the third Test," the BCCI Acting Secretary Amitabh Choudhary said in a statement.

The 32-year-old Karthik has played 23 Tests for India but his last five-day appearance for the team was back in 2010 against Bangladesh. He has 51 catches and five stumpings to his credit.

"Mr. Wriddhiman Saha suffered an upper left hamstring tendon injury during training on Thursday, January 11. The BCCI Medical Team will continue to monitor his progress," Choudhary said.