South Africa 14 series
Grames Smith, the former South African captain is undoubtedly the best skipper a Test team could ever have. He led his team in 109 Test matches out of which South Africa won 53 Tests and lost just 29 games. The South African team was a dominant force when Smith was the skipper and an undefeated stark of 14 series proves the same. Their undefeated campaign started against England when England forced a draw on their tour to South Africa and their campaign ended when Australia won the Test series by a margin of 2-1 in South Africa. This was a big upset as South Africa have won last three Tests series against Australia in Australia but this was something which came out of the box.