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Sport, Cycling, France, 18th April 1971, Belgium's Eddy Merckx (left) shakes hands with Italy's Felice Gimondi prior to the start of the 69th Paris to Roubaix race (Photo by Popperfoto via Getty Images/Getty Images)

Sport, Cycling, France, 18th April 1971, Belgium's Eddy Merckx (left) shakes hands with Italy's Felice Gimondi prior to the start of the 69th Paris to Roubaix race  (Photo by Popperfoto via Getty Images/Getty Images)

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Sport, Cycling, Roubaix, France, 5th July 1971, Tour de France, Pictured during a break in the race are L-R: Joop Zoetemelk from Holland, Belgium's Eddy Merckx, and Sweden's Gosta Petterson (Photo by Popperfoto via Getty Images/Getty Images)

Sport, Cycling, Roubaix, France, 5th July 1971, Tour de France, Pictured during a break in the race are L-R: Joop Zoetemelk from Holland, Belgium's Eddy Merckx, and Sweden's Gosta Petterson  (Photo by Popperfoto via Getty Images/Getty Images)

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Cycling, Paris, France, 19th July 1970, Belgium's Eddy Merckx gets a kiss from his wife after he won the Tour de France for the second time (Photo by Popperfoto via Getty Images/Getty Images)

Cycling, Paris, France, 19th July 1970, Belgium's Eddy Merckx gets a kiss from his wife after he won the Tour de France for the second time  (Photo by Popperfoto via Getty Images/Getty Images)

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Belgian racing cyclist Eddy Merckx of the Faemino-Faema cycling team (on right) shakes hands with 2nd placed Joop Zoetemelk of the Netherlands after finishing in first place to win the 1970 Tour de France in Paris, France on 19th July 1970. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)

Belgian racing cyclist Eddy Merckx of the Faemino-Faema cycling team (on right) shakes hands with 2nd placed Joop Zoetemelk of the Netherlands after finishing in first place to win the 1970 Tour de France in Paris, France on 19th July 1970. (Photo by Rolls Press/Popperfoto via Getty Images/Getty Images)

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Sport, Cycling, Como, Italy, 9th October 1971, Belgium's Eddy Merckx wins the Italian "Tour of Lombardia" cycle race, He covered the 266 km in 6 hours 45 minutes 46 seconds at an average speed of 39,365 km per hour (Photo by Popperfoto via Getty Images/Getty Images)

Sport, Cycling, Como, Italy, 9th October 1971, Belgium's Eddy Merckx wins the Italian "Tour of Lombardia" cycle race, He covered the 266 km in 6 hours 45 minutes 46 seconds at an average speed of 39,365 km per hour  (Photo by Popperfoto via Getty Images/Getty Images)