Former two-division world champion David Haye (26-2, 24 KOs) scored a spectacular fifth round KO over recent heavyweight title challenger Dereck Chisora (15-4, 9 KOs) on Saturday night on West Ham Football Club’s Boleyn Ground at Upton Park in London.Haye was much busier than Chisora, who was unable to connect with wild shots. Good exchange at the end of round three. Good right by Haye in round five dropped Chisora. Haye dropped him again with his follow-up barrage and the bout was waved off by referee Luis Pabon.Time was 2:59. Very impressive win for Haye as Vitali Klitschko, Robert Helinius and Tyson Fury all failed to stop Chisora in his previous losses. After the fight the fighters hugged and showed respect.“I’d be very surprised if Vitali Klitschko would want to fight me now after seeing the performance I put on tonight,” said Haye after the fight. “I guarantee he’s going to fight some chump no one’s ever heard of and then try and retire and become a politician or something, but if he wants to give the world a great fight — I’m here!”Unbeaten middleweight Gary O’Sullivan (15-0, 9 KOs) outpointed Matthew Hall (24-6, 16 KOs) over twelve rounds in a bout for the vacant WBO Euro belt. Scores were 117-111, 115-114, 117-111.Unbeaten lightweight Liam Walsh (13-0, 10 KOs) scored an eighth round TKO over Domenico Urbano (25-4-1, 10 KOs) to claim the vacant WBO Euro belt. Time was 2:10.