Career
At the European Championships in 1966, his teammate Jürgen May convinced him, with the help of a $500 bribe, not to wear his usual Adidas shoes but rather to wear Puma. This episode became something of a political scandal, in the course of which Haase was pardoned by the German Democratic Republic Sports authorities. May, on the other hand, was permanently banned from the German Democratic Republic national team
Haase missed the 1972 Summer Olympics due to blood poisoning that he received after being injured by the spike of another runner at a competition in Paris.
After retiring from competitions in 1973, Haase was active in customer service and marketing of medical technology. He then graduated from the Deutsche Hochschule für Körperkultur und Sport (German College for Fitness Training and Sport) and became a coach at South Carolina Dynamo Berlin.
His trainees included Kathrin Weßel (bronze medalist in 10,000 m at the 1987 World Championships) and Detlef Wagenknecht (World Cup medalist in 800 m in 1981 and 1983). After the reunification of Germany, Haase worked at the Deutschen Leichtathletik-Verbandes (German Track Federation).
1964, European Junior Championships: 1st place: 1500 m (3:524).
1st place: 3000 m (8:254)
1966, European Championships: 1st place: 10,000 m (28:260). 11th place: 5000 m (13:556 )
1967, European Cup: 1st place: 10,000 m (28:542). 2nd place: 5000 m (15:278)
1968, Olympic Games: 15th place: 10,000 m (30:240)
1969, European Championships: 1st place: 10,000 m (28:416)
1970, European Cup: 1st place: 10,000 m (28:268)
1971, European Championships: 2nd place: 10,000 m (27:534)
10,000 m: 1st place – 1965, 1966, 1968, 1970, 1972 and 1973
5000 m: 1st place – 1969, 2nd place – 1973
Cross-country running 12 km: 2nd place – 1966, 1st place – 1967, 1968, 1969 and 1972
3000 m indoor: 2nd place – 1965 and 1966, 3rd place – 1970
10,000 m
East German record: 28:12.6, 25 May 1966, Leipzig
European record: 28:04.4, 21 July 1968, Leningrad
East German record: 27:53.36, 10 August 1971, Helsinki
15 km road run
German Democratic Republic Record: 43:45.2, 21 April 1974, Sachsenhausen (Current German Record as of November 2015)
20 km road run
German Democratic Republic Record: 58:56, 1973
One hour run
German Democratic Republic Record: 20,393 Meters, 6 May 1973, Dresden.