In March 2010 Clufetos had quit Rob Zombie to join Ozzy Osbourne. As of May 2012 Clufetos played with Black Sabbath, filling in for original drummer Bill Ward. However, he did not perform on their latest album, 13, as Brad Wilk ended up behind the kit during the recording sessions. Clufetos returned to playing with Black Sabbath in April 2013 as the drummer for their North American tour, starting with the opening show in Houston on July 25, 2013. Clufetos continued with Black Sabbath in 2014 with first show at the Barclays Center in Brooklyn, New York.