In 2003 Matt was beaten badly in Liverpool while on tour with Chimaira. The attack was unprovoked and had nothing to do with Matt's membership of Chimaira or Chimaira's genre of music in general. The band's next performance, in Dublin, Ireland was scheduled as normal and the band performed the entire concert as a four piece while Matt recovered in hospital. He was then able to join them for the following night's performance in Belfast, Northern Ireland.
It was announced in March 2011 that DeVries would be the touring bass player for Six Feet Under along with fellow Chimaira guitarist Rob Arnold and former Chimaira drummer Kevin Talley.
In November 2011,it was announced that Matt DeVries will be leaving Chimaira after Chimaira Christmas '11 for 'personal reasons'. This was not well received by the fans, many stated "R.I.P. Chimaira" and "The Death of Chimaira."
DeVries is endorsed by ESP Guitars, and he plays his LTD MFA-600 signature model. It features an alder Viper body, a maple neck through the body with an ebony fingerboard, a TonePros Tune-O-Matic bridge, locking tuners and one EMG 81 pickup.