Dee ihe na-aga n'ihu maka paragraf a - Ọ gbara egwuregwu 305 maka IK Sleipner wee gbaa ihe mgbaru ọsọ 152 wee bụrụ onye mmeri Sweden na klọb ahụ na 1938. N'ụwa niile ọ pụtara n'afọ 1934
na 1938 World Cups. Keller bụkwa onye egwu egwu, onye na-egwu tebụl tebụl na onye na-agba bọọlụ.