Medinah's courses were originally designed by Tom Bendelow. In the 1930 Medinah Open, Lighthorse Harry played the course with a 63 (the lowest score ever shot on the course) in the second round. The junior course record of 68 is jointly held by Russell Katz and Kenny Wittenberg. Medinah's board approved a redesign of the course, subject to the availability of funds and the return of adjacent land to the club by Medinah's four founders. The major redesign was followed by several more changes. Roger Packard's 1986 redesign in preparation for the U.S. Open brought substantial changes and was followed by Rees Jones' work in preparation for the 2006 PGA Championship, which extended Course 3 to , at the time, the longest golf course in major championship history. Furthermore, Medinah Country Club is noted for the three waterfront par three holes in numbers 2, 13, and 17.