The 1958 Detroit Lions season was their 29th in the National Football League (NFL). The defending NFL champions failed to improve on their previous season and finished at 4–7–1, fifth in the six-team Western Conference. The Lions won only one game in the first half of the season (1–4–1), then spilt the final six games; one of the poorest performances by a defending league champion in NFL history. The preseason began on a sour note in mid-August as they lost 35–19 to the 14-point underdog College All-Stars at Soldier Field in Chicago, closing the margin with a late touchdown.