Back in Allsvenskan 1990, Ohlsson was unable to rescue Hammarby from an instant relegation, with a squad consisting of several homegrown youngsters due to financial difficulties. The club finished at the foot of the table, mostly due to a lack of defensive play, letting in a total of 52 goals in just 22 games. Ohlsson stayed as manager of Hammarby for two more seasons in Division 2, but was unable to lead the club back to Allsvenskan and left his position at the end of 1992.
