The 1925 PGA Championship was the eighth PGA Championship, held September 21–26 at Olympia Fields Country Club in Olympia Fields, Illinois, a suburb south of Chicago. Then a match play championship, defending champion Walter Hagen defeated Bill Mehlhorn 6 & 5 in the finals on Courses 3 & 4 to win his second consecutive PGA Championship, his third overall, and the seventh of his eleven major titles.
The victory ran Hagen's match record at the PGA Championship in the 1920s to 20–1 (.952), falling only to Gene Sarazen in 38 holes in the 1923 finals. With his second consecutive title, his winning streak stood at ten matches. This was the second of four consecutive PGA Championships for Hagen; through 2013, no other player was won more than two consecutive titles.
Hagen had close calls in this event; his first round match with low qualifier Al Watrous went to 39 holes and the quarterfinal match with future two-time champion Leo Diegel went to 40 holes after Diegel built an early lead. Hagen defeated Diegel the following year in the finals, then Diegel beat Hagen on the way to his two titles in 1928 and 1929.
The four 18-hole courses at Olympia Fields were reduced to two in the 1940s when the club sold half of its property. Formerly named numerically, the current courses are North and South.
The match play format at the PGA Championship in 1925 called for 12 rounds (216 holes) in six days:Monday – 36-hole stroke play qualifier
top 32 professionals advanced to match play
Tuesday – first round – 36 holes
Wednesday – second round – 36 holes
Thursday – quarterfinals – 36 holes
Friday – semifinals – 36 holes
Saturday – final – 36 holes
Saturday, September 26, 1925