In 1907, Ipswich became founder members of the Southern Amateur League. The club narrowly avoided relegation in many of the following seasons, and suffered a club record 15–1 defeat at the hands of the Corinthians at Portman Road on New Year's Day, 1910. The outbreak of the First World War and the commandeering of Portman Road by the Army curtailed the 1914–15 season and organised football did not return until the 1920–21 season. Just one year later, Ipswich Town became champions of the Southern Amateur League, clinching the title on the last day of the season. The club won the league a further three times, in 1929–30, 1932–33 and 1933–34, before becoming founder members of the Eastern Counties Football League at the end of the 1934–35 season.