Fiedorowicz played his entire four-year professional career with the Texans before retiring during the 2018 offseason, citing recurrent concussions.

[4] The week leading up to the Senior Bowl, Fiedorowicz impressed scouts and media in attendance with his blend of power blocking and receiving ability.

He was named the top tight end and Alabama Power's Most Outstanding Receiver during practices by the Senior Bowl's Executive Director Phil Savage.

[5] On January 25, 2014, he appeared in the Senior Bowl and recorded two combined tackles as part of Falcons' head coach Mike Smith's North team, who lost 20–10 to the South.

[7] On March 24, 2014, Fiedorowicz opted to participate at Iowa's pro day, along with Christian Kirksey, James Morris, Anthony Hitchens, and nine others.

[8] Throughout the pre-draft process, Fiedorowicz had private meetings and workouts with multiple teams, including the Denver Broncos, San Francisco 49ers, New England Patriots, New York Jets, Atlanta Falcons, Detroit Lions, and Tampa Bay Buccaneers.

[16] Throughout his first training camp, he competed with Garrett Graham, Ryan Griffin, Zach Potter, and Anthony Denham for the job as the starting tight end.

On October 9, 2014, Fiedorowicz caught the first reception of his career on a seven-yard pass by Ryan Fitzpatrick in the second quarter of a 33–28 loss to the Indianapolis Colts.

[19] During a Week 16 matchup against the Baltimore Ravens, Fiedorowicz caught a season-high two passes for 12 yards and scored his first career touchdown in their 25–13 victory.

Offensive coordinator George Godsey took over play calling duties and implemented a higher use of two tight end sets that increased Fiedorowicz's snap count.

He left the game after a helmet-to-helmet hit from Lions' safety Tavon Wilson while attempting to catch a pass by Brock Osweiler.

On January 14, 2017, Fiedorowicz caught three passes for 36 yards and a touchdown as the Texans lost 34–16 in the AFC Divisional round to the eventual Super Bowl LI Champions the Patriots.