UEFA Cup semi-finals World Soccer 24 April 2003 / 00:00 BST24 May 2011 / 13:52 BST Lazio 0-0 Porto First leg: 1-4 Porto win 4-1 on aggregate Boavista 0-1 Celtic First leg 1-1 Celtic win 2-1 on aggregate Final May 21 in Seville World Soccer