Swann pays tribute to "superstar" FlintoffDate released: 16 September 2010England spinner Graeme Swann says Andrew Flintoff's retirement from cricket is a "sad day" - adding that Flintoff changed the face of cricket in England.Swann played alongside Flintoff in the England side which won back the Ashes urn from Australia in 2009, after Flintoff had helped England to victory in 2005.Swann said the man known as 'Freddie' Flintoff was a "superstar":"It’s a sad day because he was hoping to come back from injury. "It is a shame because any team with Fred in is a better side for it and it is a shame for everyone involved with English cricket.