shirt was the first to have a buttoned-down collar, which polo players invented in the late 19th century to keep their collars from flapping in the wind (Brooks Brothers' early president, John Brooks, noticed this while at a polo match in England and began producing such a shirt in 1896). Brooks Brothers still produces this style of button-down "polo shirt". Still, like early tennis clothing, those clothes presented a discomfort on the field. In 1920, Lewis Lacey, a Canadian (born of English parents in Montreal, Quebec in 1887) haberdasher and polo player, began producing a shirt that was embroidered with an emblem of a polo player, a design originating at the Hurlingham Polo Club near Buenos Aires. The definition of the uniform of polo players – the polo shirt and a pair of white trousers – is actually a fairly recent addition to the sport. Until the 1940s shirts were generally very plain, with no numbers, writing or logos. When necessary, numbers (ranging from 1 – 4) were simply pinned on to the back of the player's shirts a few minutes before the start of a match. To differentiate the polo teams from one another, some polo shirts had horizontal stripes, others bore diagonal coloured stripes. In 1972, Ralph Lauren marketed a tennis shirt as a "polo shirt" as a prominent part of his original line Polo, thereby helping further its already widespread popularity. While not specifically designed for use by polo players, Lauren's shirt imitated what by that time had become the normal attire for polo players. As he desired to exude a certain "WASPishness" in his clothes, initially adopting the style of clothiers like Brooks Brothers, J. Press, and "Savile Row"-style English clothing, he prominently included this attire from the "sport of kings" in his line, replete with a logo reminiscent of Lacoste's crocodile emblem, depicting a polo player and pony. Golf Over the latter half of the 20th century, as standard clothing in golf became more casual, the tennis shirt was adopted nearly universally as standard golf attire. Many golf courses and country clubs require players to wear golf shirts as a part of their dress code. Moreover, producing Lacoste's "tennis shirt" in various golf cuts has resulted in specific designs of the tennis shirt for golf, resulting in the moniker golf shirt. Golf shirts are commonly made out of polyester, cotton-polyester blends, or mercerized cotton. The