The Heart of Midlothian, commonly called the Hearts, is a professional football club. The team was formed in 1874. At the outbreak of World War I, many of the players and up to 500 fans joined the 16th Royal Scots. This Heart of Midlothian War Memorial in Haymarket is a tribute to the seven players who were killed. The clock tower was erected in 1922. After a five year absence, it was returned in 2013 to one of the busiest intersections of the city.