Philadelphia Eagles After going undrafted in the
2013 NFL draft, Square was signed as a free agent by the
Philadelphia Eagles. He was released by the Eagles on August 30, 2014.
Kansas City Chiefs Square was claimed off waivers by the
Kansas City Chiefs on September 1, 2014. He was released by the Chiefs on October 31.
San Diego / Los Angeles Chargers After he was released by the Chiefs, Square was claimed off waivers by the
San Diego Chargers on November 3, 2014. On March 11, 2016, he was re-signed by the Chargers to a one-year contract. On September 3, 2016, he was suspended by the NFL for the first four games of the
2016 NFL season. On March 10, 2017, Square signed a two-year contract extension with the Chargers. He then signed one-year contracts in 2019 and 2020. He was placed on the active/
non-football injury list to start training camp on August 2, 2020, and was activated five days later.
Cleveland Browns On May 4, 2021, Square signed with the
Cleveland Browns. The Browns terminated Square's contract on August 19, 2021.
New Orleans Saints On August 27, 2021, Square signed with the
New Orleans Saints, but was released four days later.
Chicago Bears On September 8, 2021, Square was signed to the
Chicago Bears practice squad.
Las Vegas Raiders On September 15, 2021, Square was signed by the
Las Vegas Raiders off the Bears practice squad. He was waived by the Raiders on December 11, 2021, and re-signed to the practice squad.
Cincinnati Bengals On January 25, 2022, Square was signed to the
Cincinnati Bengals practice squad. On January 30, Square became the first player in NFL history to play for two teams in one postseason.
Retirement On December 11, 2023, Square signed a one-day contract to retire as a member of the Chargers. ==Personal life==