He began his professional career with the Indianapolis Colts of the National Football League (NFL), and played his college football for the Wisconsin Badgers.
Fenelus played his college football at Wisconsin under Bret Bielema being awarded first team all Big Ten twice.
[1][2] In 2012 he was signed as an undrafted free agent with the Indianapolis Colts but he never made the final roster.
[3] After playing out 2012 with the Omaha Night Hawks, he then had a season in the Canadian Football League with the Saskatchewan Roughriders in 2013.
Fenelus began his coaching career in 2015 at his alma mater working as a graduate assistant.