Complex sentence: The tour ended on August 2,2009 at the Sonisphere Festival in Knebworth, England, the band's last performance with drummer Jimmy "The Rev" Sullivan who died on December 28,2009.
Split into simpler sentences: The tour ended on August 2,2009, where the band performed their last show of the tour at the Sonisphere Festival in Knebworth, England. This was the band's last ever performance with drummer Jimmy "The Rev" Sullivan who died on December 28,2009.