The next three seasons were disappointing for the aging Celtics. In the 1987–88 season, Johnson averaged 12.6 points and 7.8 assists, but in the 1988 Playoffs, the Celtics were unable to beat the Detroit Pistons in the Eastern Conference Finals. In the next season, Johnson (who statistically declined to 10.0 points and 6.6 assists per game) and his team made the 1989 NBA Playoffs on a meager 42–40 record (largely due to the absence of star forward Larry Bird for almost the entire season), but were immediately eliminated in the first round (again, largely due to the absence of the injured Larry Bird.) The following 1989–90 NBA season was Johnson's last. The now 35-year-old playmaker relinquished his starting point guard role to younger John Bagley, but when Bagley dislocated his shoulder, Johnson returned with a high level of performance and was lovingly called "our glue man" by coach Jimmy Rodgers. In that season, Johnson started in 65 of his 75 games, averaging 7.1 points and 6.5 assists, but the Celtics failed to survive the first round of the 1990 NBA Playoffs.