In May 2009, Megadeth made their twelfth album, "Endgame". Megadeth started a tour for the album in October. The tour ended in December. In January 2010, the band was supposed to go on tour with Slayer and Testament, but the tour was cancelled. This was because Slayer bassist Tom Araya needed back surgery. A single from "Endgame", "Head Crusher", was nominated for a Grammy Award in 2010.