In 1921, the PGA Championship invited the top 31 professional finishers at the 1921 U.S. Open, along with the defending champion, to the tournament and as such Loeffler was invited.
•
Loeffler finished in a tie for 33rd place with his first round loss in match play to Cyril Walker in the 37th hole.
Carl Gustaf Emil Mannerheim | Emil Nolde | Emil Adolf von Behring | Hermann Emil Fischer | Emil Gilels | Emil Fischer | Emil Schult | Emil Constantinescu | Emil Brumaru | Franz Joseph Emil Fischer | Emil Viklický | Emil Steinberger | Emil Rödiger | Emil Nofal | Emil Młynarski | Emil Jakob Schindler | Emil Holub | Emil Haury | Emil Ghuri | Emil du Bois-Reymond | Emil Beaulieau | Tom Loeffler | Friedrich Loeffler Institute | Friedrich Loeffler | Emil Zátopek | Emil von Sauer | Emil Theodor Kocher | Emil Savundra | Emil River | Emil Lederer |