O'Donnell was drafted by the Chicago Bears with the 191st overall pick in the sixth round of the 2014 NFL Draft, the only punter selected in the draft, and the first punter selected by the Bears since Todd Sauerbrun in 1996. He has been with the team ever since. This made him the longest-tenured player on the roster.
He has been an excellent punter for 8 seasons with the Chicago Bears now. As of 2021's NFL offseason, O'Donnell held at least two Bears franchise records, including:
Most Yards per Punt (career): 45.0Most Yards per Punt (season): 46.98 (2017)
O'Donnell had a fine year in 2021, finishing 16th in the league with 46.2 yards per attempt among punters with at least 30 punts during the season. Aside from his kicking, he was also crucial in his rapport with kicker Cairo Santos and long snapper Patrick Scales. The trio worked together to ensure a solid season in the field goal department, one of the brightest spots for much of the year.