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 two performances, in Dublin, & Belfast Ireland were scheduled as normal and the band performed both concerts as a four piece while Matt recovered in hospital. He was then able to join them after that for the rest of the UK/European Tour.
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. While playing bass in Unearth and Fear Factory, he would use LTD B-series 5-string basses, but eventually switched to using Ibanez Soundgear 5-string basses in 2013.