Even Simple Plan used to be an opening band. Here you can check out the list of the bands that Simple Plan has ever opened for. If you know any other, please, contact me.
Green Day
When have SP opened for them? 2005
Online: MySpace | official website
Avril Lavigne
When have SP opened for her? 2003
Online: MySpace | official website
Bowling For Soup
When have SP opened for them? 2003
Online: MySpace | official website
Sugar Ray
When have SP opened for them? 2002
Online: MySpace | official website