False. Since 1945, Wimbledon has been canceled more than once. The statement is not accurate.
Wimbledon was canceled in 2020 due to the COVID-19 pandemic, marking the first time the tournament was canceled since World War II. However, prior to 2020, Wimbledon was canceled three times during World War II from 1940 to 1945. Therefore, Wimbledon has been canceled on more than one occasion since 1945.