Moffitt attended Notre Dame High School in West Haven, Connecticut, US, where he was a two-time all-conference choice as a two-way lineman.

According to sidelinescouting.com, Moffitt is "not very fast" and "lacks real quickness", raising questions about his longevity as an American football guard or center.

[8] His career took a further downside when hit with a four-game suspension for using performance-enhancing drugs [9] Moffitt was traded to the Cleveland Browns on August 19, 2013.

[11] In an interview with 710 ESPN Seattle, Moffitt claimed that Cleveland wanted him to take less money to play there and when he said he wouldn't do that they told him that they were going to fail his physical.

[12] On August 20, 2013, Moffitt was traded to the Denver Broncos in exchange for defensive tackle Sealver Siliga.