06-19-2009, 11:37 AM
Often times we see players were patches of sponsors (from the business world), but I don't ever recall a tennis player wear something symbolizing a cause or charity(s) they support. Recently, Phil Mickleson has been wearing the pink ribbon on his hat to support Breast Cancer awareness, due in part to his wife's situation. What rules, if any, are there that govern the display of these causes for professional tennis players? Thanks.