Its collarless design goes well with current golf course dress codes and gives you both freedom and style. The mock golf shirt is designed to work well. Precision is important in golf, and each swing rests on being able to move freely. In the late 1990s and early 2000s, when golf clothes started to look more like athletic wear, the mock golf shirt made its first big showing. Traditional button-down polos were replaced by simple styles that got rid of sleeves without losing any of their style.