At the same time, the Packers had begun noticeably slipping on the field after Hutson's retirement in 1945. Still, the Packers remained competitive until 1948, when they suffered their first losing season since 1933, and only the second losing season in franchise history. The bottom fell out in 1949, when the Packers won only two games—at the time, their worst season ever. This was at least in part due to Lambeau's refusal to abandon the Notre Dame Box that he'd learned during his brief time in South Bend. The Packers continued to run this variation of the single wing long after most teams began running the T formation.