David Craig Mackay was born on November 14, 1934, in Edinburgh, Scotland. In the course of a 19-year career, he played for Heart of Midlothian, Tottenham Hotspur, Derby County and Swindon Town.
He also represented Scotland 22 times, scoring four goals and playing in the 1958 World Cup finals.
Mackay was born in Edinburgh and began his playing career with the club he supported as a boy, Heart of Midlothian. He won all three Scottish domestic honours with the club. He captained the side in 1957-58 when the club broke the senior British league goalscoring record with 132 goals for, and only 29 conceded.
He was signed by Tottenham Hotspur for £32,000 in March 1959. During the 1960s his fierce determination and skill contributed to Spurs' greatest ever team which won the Double in 1961.
He also won two more FA Cups in 1962 and 1967, and the Cup Winners Cup in 1963. Brian Clough claimed in 2003 that Mackay was Tottenham Hotspur's greatest ever player.