Australia's Michael Katsidis will not face WBO super-featherweight champion Robert Guerrero from the US in the States next month as the American has postponed the fight in order to spend more time with his wife who is battling cancer.

Casey Guerrero was diagnosed with leukemia two years ago, which had gone into remission, but the cancer has returned recently. Promoter Richard Schaefer said yesterday that Casey Guerrero had received a bone marrow transplant but is in a critical condition.