On the docile and flat subcontinent wickets, fast bowlers need to be innovative in order to be successful. The major reason why the immensely talented Pakistani and Indian teams were unable to get the desired results in International cricket in the earlier days was the discouraging nature of wickets at home. While little has changed as far as the success rate of Indian bowlers is concerned, the Pakistanis have found a way out thanks mainly to the innovative genius of famous fast bowler Sarfraz Nawaz. The art which has literally transformed the fortunes of the Pakistan team is reverse swing, which has been perfected by Wasim Akram and Waqar Younis, the deadly W's. Yet, what is unfortunate is that the cricketing world at large has instead of appreciating the talent of the Pakistani bowlers, raised doubts regarding the authenticity and legitimacy of reverse swing.
Reverse swing is the act of swinging the old ball by keeping the shine on one side only.
That is that, it is NOT ball tampering. The first time the Pakistani bowlers became a center of controversy was during the England tour of 1992. On that tour the Pakistan bowlers effectively demolished the English batsmen on their home wickets. This was just a bit too much for the sensitive English media. Ever since that 1992 series fingers are raised whenever Pakistani bowlers demolish an opposition.