The term "Big Sam" encapsulates many aspects about manager Sam Allardyce: his stubbornness, his physique, his reputation, his preference for a towering striker.

Yet for Helen Chamberlain and Max Rushden at Soccer AM the nickname was more about the size of Allardyce's noggin, frequently telling famous West Ham fans - such as Danny Dyer and Jaime Winstone - that their manager's head has been the source of constant fascination.

They finally got to ask Joint-Chairman David Sullivan about the circumference of Big Sam's head when he appeared on the show, challenging him to find an answer.

With Sullivan making a donation to Prostate Cancer UK as part of the project, defender James Collins was given a trusty tape measure and asked to size-up Big Sam's skull.

The result? Sam Allardyce's head measures 26 inches in height and 23 inches around.