He became a professional rider in 2001. In, Wesoły rode in the Herald Sun Tour (Australia) for Pelaco (a local sponsor). He has ridden in the Tour de France, the Giro d"Italia, and the Vuelta a España.
2007 Wyścig (Poland) 4th stage,, 9th place 6th stage, (Kielce, Poland), 1st place.
2007 Dookoła Mazowsza 2006 Course de la Solidarité Olympique (Race of Solidarity and Olympics) 1st stage (Radom, east-central Poland), 2nd place 4th stage (Przemyśl, southern Poland), 2nd place 6th stage (Bielsko-Biała, southern Poland), 2nd place Wyścig Dookoła Mazowsza (Poland) 3rd stage, first place 2nd place overall 2005 Szlakiem Grodów Piastowskich 1st stage, 9th place 3rd stage, 4th place 4th stage, Wyścig Solidarności i Olimpijczyków, 8th place 4th stage, Bałtyk-Karkonosze Tour, 9th place 4th stage, Dookoła Mazowsza, 9th place 2004 Championnat de Pologne (Championship of Poland) (27 June), 1st place Nationaler Meister (Strasse) (National Masters, Road Race), 1st place 4th stage of the Kalisz-Konin (Poland), 3rd place 3rd stage of the Baltyk-Karkonosze Tour (Zary, Poland), 2nd place NK Cyclocross, Elite, Poland (Gorzów Wielkopolski, Poland), 1st place 2003 6th stage, Course de la Solidarité Olympique (Race of Solidarity and Olympics) (Kielce, Poland), 1st place 6th stage, Tour of Queensland (Gin Gin, Australia), 3rd place Memoriał Wajsa - Choszczno, 1st place 3rd stage, Kalisz-Konin, 2nd place 3rd stage, Herald Sun Tour, 5th place.
In 2006, he became a member of the Polish UCI Continental cycling team, Commodity Credit Corporation Polsat, now Commodity Credit Corporation Polsat Polkowice. Wesoły has also been a member of Amore e Vita-Beretta (Italy) (2001, 2003–2004), and Team Skil-Moser (Netherlands) (2005).
