He played college football at Oregon State and Alabama, and signed with the Houston Texans as an undrafted free agent in 2016.

He has also been a member of the Dallas Cowboys, Cleveland Browns, Arizona Hotshots, and DC Defenders.

Mullaney committed to Oregon State and then transferred to Alabama totaling 10 touchdowns throughout his career.

[1] He caught 38 passes for 390 yards and a career high 5 touchdowns as a senior en route to a National Championship with the 2015 Alabama Crimson Tide football team.

[9] During the 2020 XFL Draft in October 2019, Mullaney was selected by the DC Defenders in the open phase.