 The Blackhawks welcomed their one millionth fan of the season at the United Center before Game 6 of the Western Conference Semifinals on May 11, 2009.Prior to the 2009–10 NHL season, the Blackhawks made another major free agent purchase, signing Marian Hossa to a 12-year, US$62.8 million contract.The team also acquired Tomas Kopecky, John Madden and Richard Petiot.