The colour of the ball and the hours of play can change as much as they like. What won't change, despite everything that has happened to Test cricket in its history of 139 years, is that bowlers will still win matches.It was that way shortly after 1pm on March 15, 1877 when Alfred Shaw of England lobbed the first delivery in the very first Test match at Australia's Charles Bannerman at the Melbourne Cricket Ground, and it will be that way when Australia and South Africa square up in their three-Test series next month.And it's in those terms that Paul Harris thinks South Africa will have the edge."If Dale [Steyn], Vernon [Philander] and [Kagiso] Rabada get it right, we're going to be tough to beat," the former South African left-arm spinner said.That's probably South Africa's first-choice seamers, although Morné Morkel and Kyle Abbott would make decent arguments to the contrary.Matthew Short captained the Cricket Australia XI that had to contend with that lot in a day-night tour match at Adelaide Oval at the weekend."They are some of the best bowlers in the world, and the challenge for us was the pink ball because none of us has faced that," Short said in Adelaide."As the sun went down it was definitely harder to bat, but I think just the quality of their bowlers made it difficult for us."Each of South Africa's five quicks took two wickets to dismiss the home side for 103, with Short's 57 their only score in double figures.The Australian Test team looms as a far higher hurdle than a young side in which no one went into the match with more than half-a-dozen first-class caps, but Harris would not be swayed from his view that South Africa were the early favourites for the series."Our top six is as good if not better than theirs - they have a few questions around their top six," he said. "The only question-mark around us is the allrounder at No 7." - TMG Digital..