A centre forward, Lozanov was a long-time player of PFC Levski Sofia in the 1930s and captained FC Bayern Munich in 1937–39, which makes him the only Bulgarian who ever captained the largest German club.

[3] Lozanov's attacking prowess earned him the nickname The Tank; reportedly, he once shattered the crossbar with a powerful shot.

[4] As a student in Brno, Czechoslovakia in 1935, Lozanov played for local side SK Moravská Slavia.

[1] Lozanov was a regular first team player in the Gauliga Bayern between 1937 and 1939, featuring for Bayern Munich alongside German internationals Ludwig Goldbrunner, Jakob Streitle and Wilhelm Simetsreiter.

[2] Returning to Bulgaria, Lozanov continued his career at Levski Sofia for two more years until retiring from football in 1941 at age 30.