Deryck Whibley

Sum 41 made it to Australia, but they won't be performing on this tour leg due to Deryck Whibley's pneumonia diagnosis.

The Sum 41 singer makes a public challenge to his former manager to have the truth proven under oath in a court of law.

The Sum 41 frontman details in his new book an alleged relationship with the band's former manager.

See what the Sum 41 singer said about the rumors he's joining Linkin Park (and Oasis).

A new clue has fans abuzz that the Sum 41 singer will join Linkin Park on the concert stage. See what fans are saying and why it may or may not be true.

While Sum 41 are in the middle of their final tour, frontman Deryck Whibley reflects on the decision to call it quits and shares stories about his new memoir.

Get the details here.

See what he said.

Read the update from his wife.

See their statement.

What's the rush?

A larger sum.