Cricket: South Africa 337-4 at tea in second Test

South Africa were 337-4 in their first innings at tea in reply to Pakistan's 99 on the second day of the second and final Test in Dubai on Thursday.

Opener Graeme Smith was unbeaten on 165 for his 27th Test hundred and AB de Villiers on 100 not out for his 17th century at the break as South Africa extended their lead to 238 runs with six wickets intact.

Pakistan lead the two-match series 1-0 after winning last week's first Test by seven wickets in Abu Dhabi.