Jan de Blécourt

Dr. Jan Johannes de Blécourt (13 July 1860 – 20 March 1925) was a Dutch sports shooter.

Personal life Born in Wildervank, in the province of Groningen, in 1860, he later lived in , Nijmegen. He died on 20 March 1925 in Laag-Soeren at the age of 64.

At the 1908 Summer Olympics, De Blécourt complained about serious irregularities in how points were recorded during the shooting competition. He stated here were no clear, fixed rules on how to score shots that touched the ring lines on the target. Some referees counted a hit that just touched the upper line (for example, giving 8 points if the shot touched the line of the 8-ring). Others referees said the bullet had to pass halfway through the ring line to earn those points. This inconsistency caused major differences in scorin because there were no possibility of later verification. After every ten shots, the targets were covered over, so no later review or correction of the scores was possible.