Complex sentence: Counter-intuitively, the best approach for a fast bowler is not to bowl constantly at the wicket as such predictability allows the batsman to simply defend his or her wicket and pick off the occasional bad ball.
Split into simpler sentences: Counter-intuitively, the best approach for a fast bowler is not to aim consistent balls at the wicket as this prompts an obvious and easy response. The batsman can simply defend his or her wicket and pick off the occasional bad ball.