Career
He played college football at the University of Delaware. He was drafted by the Baltimore Ravens in the fourth round of the 2012 NFL Draft. Gradkowski played college football as a guard and a center.
He began his career playing for West Virginia University.
He later transferred to the University of Delaware. He started all fifteen games as a junior.
Baltimore Ravens
Gradkowski was drafted in the 4th round (98th overall) of the 2012 NFL Draft by the Baltimore Ravens. The game"s Most Valuable Player was Joe Flacco, who was also a transfer to the Delaware Blue Hens.
With the retirement of Matt Birk following the 2012 season, Gradkowski became the starting center for the Ravens.
Denver Broncos
Gradkowski was traded to the Denver Broncos on April 1, 2015, for draft picks. He was waived on September 6. Atlanta Falcons
Gradkowski was picked up off waivers by the Atlanta Falcons on September 7.
Carolina Panthers
On March 10, 2016, Gradkowski signed a 3-year, $3.15 million free agent contract with the Carolina Panthers.
He also received a $400,000 signing bonus with $450,000 guaranteed. With Pro-bowl Center Ryan Kalil starting at center, Gradkowski act as a backup center and guard.
Gradkowski is the younger brother of former NFL quarterback Bruce Gradkowski.