This trade is the root of the Joe Montana (1993) trade tree — the full chain is traced there.
Agreed in principle April 16, 1993 and officially completed April 20, 1993. With Steve Young entrenched after Montana's elbow injury cost him nearly two seasons, the 49ers sent Joe Montana, S David Whitmore, and a 1994 third-rounder to Kansas City for the Chiefs' 1993 first-round pick (No. 18). Montana turned down a richer Cardinals offer (3 yrs/$15M) to take the Chiefs' 3-yr/$10M deal, then led Kansas City to the AFC Championship Game in 1993.
On April 20, 1993, Kansas City Chiefs sent a 1993 first-round pick (No. 18, became Ernest Dye) to San Francisco 49ers for a 1994 third-round pick (No. 92, became Lake Dawson), David Whitmore, and QB Joe Montana.