SummerSlam (2015) was a professional wrestling pay-per-view (PPV) event produced by WWE. It took place on August 23, 2015, at Barclays Center in Brooklyn, New York.It was the twenty-eighth event under the SummerSlam chronology, and the first since 2008 to be held outside of Los Angeles as Staples Center was the exclusive home for SummerSlam from 2009 to 2014. This was the 8th SummerSlam to be held in the New York metropolitan area after the 1988, 1989, 1991, 1997, 1998, 2002, and 2007 editions. The Izod Center was originally supposed to host SummerSlam, but due to its closure in April 2015, the event was moved to the Barclays Center.The event will also be the first in the SummerSlam chronology to be four hours in length, a length previously reserved only for WrestleMania. Ten matches were contested at the event, with no pre-show. The main event was Brock Lesnar facing The Undertaker in which Undertaker won by submission when Lesnar passed out of Hell's Gate. Also at the event, WWE World Heavyweight Champion Seth Rollins defeated United States Champion John Cena to win both titles after SummerSlam host Jon Stewart attacked Cena.
