claim: Ten matches were contested at SummerSlam, with no pre-show.
evidence: SummerSlam -LRB- 2015 -RRB- was a professional wrestling pay-per-view -LRB- PPV -RRB- event produced by WWE .. WWE. WWE. SummerSlam. SummerSlam. professional wrestling. professional wrestling. pay-per-view. pay-per-view. event. List of WWE pay-per-view events. It took place on August 23 , 2015 , at Barclays Center in Brooklyn , New York .. Barclays Center. Barclays Center. Brooklyn. Brooklyn. New York. New York ( state ). The twenty-eighth event under the SummerSlam chronology , this was the first since 2008 to be held outside of Los Angeles as Staples Center was the exclusive home for SummerSlam from 2009 to 2014 , and the eighth SummerSlam to be held in the New York metropolitan area .. New York. New York ( state ). SummerSlam. SummerSlam. event. List of WWE pay-per-view events. Los Angeles. Los Angeles. Staples Center. Staples Center. New York metropolitan area. New York metropolitan area. The Izod Center was originally supposed to host SummerSlam , but due to its closure in April 2015 , the event was moved to Barclays Center .. Barclays Center. Barclays Center. SummerSlam. SummerSlam. event. List of WWE pay-per-view events. Izod Center. Izod Center. The event was the first in the SummerSlam chronology to be four hours in length , a length previously reserved only for WrestleMania .. SummerSlam. SummerSlam. event. List of WWE pay-per-view events. WrestleMania. WrestleMania. The event was the second night of what was billed as a `` triple-header '' at Barclays Center , with NXT TakeOver  : Brooklyn having taken place the previous night , and Raw the following night .. Barclays Center. Barclays Center. Brooklyn. Brooklyn. event. List of WWE pay-per-view events. Raw. WWE Raw. Ten matches were contested at the event , with no pre-show .. event. List of WWE pay-per-view events. In the main event , The Undertaker defeated Brock Lesnar in controversial fashion ; Lesnar put Undertaker in his Kimura lock and the timekeeper rang the bell after seeing the Undertaker supposedly indicating submission , but since the referee had n't seen a submission and never stopped the match , the match continued .. Brock Lesnar. Brock Lesnar. The Undertaker. The Undertaker. event. List of WWE pay-per-view events. Kimura lock. Armlock#Kimura ( Gyaku ude-garami ). The confusion allowed Undertaker to surprise Lesnar with a low blow before trapping him in the Hell 's Gate submission hold , during which Lesnar passed out to give Undertaker the win .. low blow. Groin attack#Low blow. submission hold. Professional wrestling holds