The unofficial practice of never replacing a baggy green cap began in the 1990s. Steve Waugh refused to replace his as it held too many memories to simply discard it. Originally, a baggy green cap was simply supplied to each player with his equipment and a new one was issued for each tour. In the early 1990s, however, an unofficial tradition emerged among the players of never replacing a cap. The more dilapidated a cap, the more it signifies a player's seniority.
http://mycityportal.net/ - Steve Waugh joins Keralites in Vishu celebrations - Times of India - http://news.google.com/news/url?sa=tfd=Rusg=AFQjCNEc-piWe8b2Lpr5Z7f4kFrAWXY8iQurl=http://timesofindia.indiatimes.com/sports/off-the-field/Steve-Waugh-joins-Keralites-in-Vishu-celebrations/articleshow/19539566.cms