Foulis tied for eighth place in the 1897 U.S. Open, held at the Chicago Golf Club in Wheaton, Illinois.

[2] Foulis played in the 1897 U.S. Open held at Chicago Golf Club in Wheaton, Illinois, where his brother James was the head professional.

[3] In 1921 David became the professional and greenskeeper at the Hinsdale Golf Club in Chicago where he remained until his retirement in 1939.

[4] David and his brother James played a significant part in the evolution of golf equipment.

In response to the demands of the new ball they developed the "mashie-niblick", the modern 7-iron, which fell between the traditional mashie (5-iron) and niblick (9-iron), and patented the design.