As of 2019, there were 4 tied matches in Cricket World Cup history: 1999 (Australia vs South Africa), 2003 (South Africa vs Sri Lanka), 2011 (India vs England), and 2019 (India vs Afghanistan). However, the 2023 World Cup added more tied matches, making this answer time-sensitive. The question appears to be from a pre-2023 context when the count was 4. Current answer depends on whether the question has been updated.