Mamelodi Sundowns striker Peter Shalulile says that hard work is the secret to his success over the last two seasons. Sundowns have romped away to a big lead and have the most impressive squad in the league, comfortably outstripping Kaizer Chiefs and Orlando Pirates, however, Shalulile is the jewel in their crown. Shalulile firmly believes that putting in extra work in training and preparation gives him a competitive edge. The Namibian striker currently tops the goalscoring charts in the DStv Premiership, with 13 goals, which is one shy of his tally from the whole of last season. Peter Shaluli…