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In 1953 and 1954, Baeten finished second in the 500cc European motocross championships to Auguste Mingels.
In 1953 and 1954, Baeten finished second in the 500cc European motocross championships to Auguste Mingels.
In 1957, the F.I.M. upgraded the competition to world championship status, and again Baeten would finish in second place, this time to Bill Nilsson on an AJS motorcycle. In 1958, Baeten would ride an FN motorcycle to claim the 500cc motocross world championship, defeating Nilsson and Sten Lundin. Baeten was killed in a racing accident in 1960.