Harmer's call-up a warning to Tahir
Offspinner Simon Harmer has been added to South Africa's Test squad for the New Year's Test against West Indies in Cape Town, following Imran Tahir's expensive showing in Port Elizabeth

Imran Tahir eventually got into the wickets in Port Elizabeth, but struggled to tie in-form batsmen down • Gallo Images
Firdose Moonda is ESPNcricinfo's South Africa correspondent