BBC Sport - Whet your appetite ahead of BBC Challenge Cup coverage

Whet your appetite for the Challenge Cup

BBC Sport takes a look back at some magic moments from previous Challenge Cups ahead of this weekend's fourth round fixtures.

Watch live coverage of Leeds v Crusaders on Saturday on BBC One from 1500-1600 BST and on BBC Two from 1600-1715 and online.

Watch live coverage of Halifax v Bradford and the draw for round five on Sunday at 1500-1730, BBC Two and online.