What is the nickname of the man who managed West Ham United immediately before Slaven Bilić ?
West Ham United F.C. managers:  The current manager is Slaven Bilić who was appointed in June 2015. West Ham United F.C. managers:  The most recent manager before that was Sam Allardyce who was appointed in May 2011 and left the club in May 2015. Sam Allardyce: Samuel Allardyce ( ; born 19 October 1954), known as "Big Sam", is an English football manager and former professional player, who most recently managed Crystal Palace from December 2016 to May 2017.
"Big Sam"