About Jack Middelburg
Jack Middelburg was a Dutch professional Grand Prix motorcycle road racer. Together with Wil Hartog and Boet van Dulmen, he was part of a contingent of Dutch riders who competed at the highest levels of Grand Prix racing in the late 1970s. Middelburg never earned a factory-sponsored race bike, yet managed to post some impressive results. Middelburg became the second Dutchman to win the Dutch TT in 1980, and in 1981 he pulled off an unexpected upset when he defeated the defending world champion, Kenny Roberts, at the British Grand Prix at Silverstone. His British Grand Prix victory aboard a Suzuki RG500 was the last time a privateer competitor won a 500cc Grand Prix race, as motorcycle Grand Prix racing became increasingly professional during the 1980s. Jack Middelburg (30 April 1952 – 3 April 1984) was a Dutch professional Grand Prix motorcycle road racer.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.