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He competed in the 200 m and 4×100 m relay events at the 1948 Summer Olympics and finished in sixth place in the relay.
He competed in the 200 m and 4×100 m relay events at the 1948 Summer Olympics and finished in sixth place in the relay.
As a teenager Lammers trained in gymnastics and changed to athletics only after World World War World War II At the 1946 European Athletics Championships he was part of the Dutch 4×100 m team (with Jo Zwaan, Gabe Scholten and Chris van Osta) that finished in fourth place. He was preparing for the 1952 Summer Olympics, but tore a muscle.