If you take Jerry Rice out of the equation, the 49ers offense becomes an absolute joke:
Below is a list of the 49ers offensive ranks by year first with rice, then if you take him out and factor in a league average receiver.
1988: 7th, 15th
1989: 1st, 12th
1990: 8th, 15th
1991: 3rd, 8th
1992...