In 1929 , Hakoah moved to the American Soccer League , where Mahrer played until the fall of 1931 .
At that time , he joined the Hakoah All Stars in the Eastern Professional Soccer League .
In 1929 , Hakoah All Stars moved to the American Soccer League , where Mahrer played until the fall of 1931 .
At that time , he joined the Hakoah All Stars in the Eastern Professional Soccer League .