1990 San Diego Chargers season

The 1990 San Diego Chargers season was the franchise's 21st season in the National Football League (NFL) and its 31st overall. After a 1–4 start, the Chargers recovered to 5–5, only half a game out of the playoff places. Five losses in their final six games, however, saw them finish with a 6–10 record for the third consecutive season. Only one of San Diego’s six victories came against a team with a winning record, and none were against eventual playoff teams. As had been the case in 1989, close finishes were a problem—the Chargers were 0–5 in games decided by seven points or fewer.

During the offseason, Bobby Beathard joined the Chargers as their general manager, beginning a ten-year tenure with the club. His first draft choice was Junior Seau, who would go on to have his number retired by the Chargers after playing in San Diego for the first thirteen seasons of his Hall of Fame career. In 1990, Seau was part of a strong defense that ranked 5th in the league, with linebacker Leslie O'Neal and cornerback Gill Byrd enjoying strong seasons. On offense, the Chargers continued a recent trend of trying multiple starting quarterbacks during the season, with Billy Joe Tolliver seeing the most action. The passing game was ranked well below the league average, but the Chargers had much more success while running the ball, with Marion Butts gaining 1,225 yards, a club record at the time.