Smash was a Japanesepuroresu and combat sports promotion, founded in December 2009 following the folding of Hustle. In the fall of 2009 Hustle ran into financial problems that led to several show cancellations. After a planned restructuring and restarting of the promotion failed, a number of officials and wrestlers decided to start a new project. Smash held its first show on March 26, 2010.
In April 2011, it was announced that Deep and the MMA division of Smash had formed an amateur promotion named the Japan MMA League (JML).
On February 10, 2012, Smash announced that the promotion would be folding after its March 14 event, following a disagreement between Tajiri and financial backer (Quantum Jump Japan CEO) Masakazu Sakai. On April 5, 2012, Tajiri announced the follow-up promotion to Smash, Wrestling New Classic, which would hold its first event on April 26. On June 1, 2012, Sakai and his Smash backers bought Pancrase, officially incorporating Smash's MMA division into the promotion and re-affirming the partnership with Deep in JML.