Hamann won the FA Cup with Liverpool in May 2006, coming on as a substitute in the second-half. He more than played his part in another trophy win for the Reds, who were 3–2 down to West Ham United at the time he came on. Steven Gerrard scored an injury-time leveller for Liverpool to take the match to extra-time. Liverpool would go on to win the Cup on penalties after a goalless extra-time. Once again, Hamann scored the first penalty in the shoot-out.