Career
Osendarp was a football player and started training in sprint for fun. The games were held in Nazi Germany and Osendarp gained some fame as the fastest white sprinter behind the black Americans. A possible third medal was lost when Osendarp dropped the baton in the final of the 4 × 100 m relay while fighting for second place.
Contested on the second day of the games, drenching rain made the track soggy and slow for the running of the 100 meter dash semi-finals.
Despite the unfavorable conditions Osendarp still managed a time of 10.6 s, right behind American Ralph Metcalfe. In the 100 m final he ran 10.5 s, behind Americans Jesse Owens 10.3 s, and Ralph Metcalfe 10.4 son
Upon his return home Osendarp was called "the best white sprinter" by the Dutch press In 1948, Osendarp was sentenced for 12 years in jail for acts he committed during the war.
He was released early in 1953 and moved to Limburg to work in the mines.
He died in 2002 in Heerlen.