Career
Football Club Heidenheim.
Youth
Widemann started playing football with local Turn- und Sportverein Moorenweis at the age of four. In 2008 he moved to nearby South Carolina Fürstenfeldbruck. Unterhaching
During the winter break of the 2013-2014 season, he was signed by 3.
Liga club SpVgg Unterhaching for their U19 youth team playing in Under 19 Bundesliga South/Southwest.
At the end of the season his team was relegated, him making eleven appearances scoring two goals. While preparing for the upcoming season in summer 2014, Widemann got called by head coach Christian Ziege for the 3.
Liga senior team He made his debut coming on as a substitute at the second matchday in a home 3-3 draw versus SV Wehen Wiesbaden.
His first goal in a regular game he scored only three days later in an away 2-0 victory over Jahn Regensburg where he also came on as a substitute. Subsequently he became a regular for the team, even being the second best goalscorer with seven strikes in twelve games during the first half of the campaign.
In the meantime he also signed a professional contract until 2017.