Why do snooker players wear waistcoats?
While watching Ronnie O’Sullivan defeat Ding Junhui last week to become the oldest winner of the UK Championship, it struck me that snooker’s dress code – usually a black waistcoat over a white shirt, paired with a black bow tie – is oddly formal. Even darts players wear polo shirts. When did this outfit become standard attire, and why does it persist? Simon Byatt, York
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