Career
When Max Dilger was injured, Wölbert was nominated as second track reserve at the 2008 German Grand Prix. But, after re-staged this event in Bydgoszcz, Poland (as the Final Grand Prix), Wölbert was replaced by Pole Grzegorz Zengota. He applied for citizenship in November 2009 in Kuyavian-Pomeranian Voivodeship Office in Bydgoszcz.
His application was support by President of Grudziądz Robert Malinowski and a GTŻ Grudziądz, his Polish team
His application will be consider by the President of the Republic of Poland. As a Pole, he will be apply for a Polish speedway licency (Licencja "Ż") and starting in Polish league as a domestic rider.
World Championships
Speedway Grand Prix
2008 - as a second track reserve
Speedway World Cup
2008 - 2nd in Qualifying Round One (8 pts)
Individual U-21 World Championship
2007 - Ostrów Wielkopolski - 16th place (1 pt)
2008 - 12th place in Qualifying Round Two
2009 - 15th place in Semi-Final Two
Team U-21 World Championship
2006 - Rybnik - 4th place (6 pts)
2007 - Abensberg - 4th place (3 pts)
2008 - 3rd place in the Qualifying Round Two
2009 - 2nd place in the Qualifying Round One
2010 - 3rd place in the Qualifying Round Two
European Championships
Individual European Championship
2008 7th place in Semi-Final One
Individual U-19 European Championship
2005 - Mšeno - 8th place (9 pts)
2006 - Goričan - 10th place (6 pts)
2007 - Częstochowa - 8th place (8 pts)
2008 - Stralsund - 6th place (9 pts)
European Pairs Championship
2006 - Lendava - 7th place (3 pts)
2008 - Natschbach-Loipersbach - 7th place (1 pt)
Team U-19 European Championship
2008 - Rawicz - Runner-up (12 pts)
Domestic competitions
Individual German Championship
Individual U-21 German Championship
2008 - 3rd place
2009 - Norden - Runner-up.