- Randy Elliott (#719) didn't play for the Giants in 1978. He has no stats at all from 1978 and 1979. He played for the Giants in 1977 and then played for the Oakland A's (and their AAA team) in 1980. I wonder what happened to him during those two years.
- Gary Thomasson (#684) didn't play for the Giants in 1978. He was traded to the Oakland A's before the 1978 season as part of the Vida Blue trade.
- Larry Herndon (#512) was the starting center fielder and played in 151 games in 1978. He batted .259 with one home run and 32 RBI.
- Vic Harris (#436) batted .150 in 100 at bats as a utilityman in 1978.
- Jack Clark (#384) batted .306 with 25 HR and 98 RBI. The 22-year-old right fielder led the Giants in runs (90), hits (181), doubles (46), home runs, and RBI.
- Terry Whitfield (#236) batted .289 with 10 HR and 32 RBI in 149 games. Terry was the Giants' starting left fielder.
Others who played OF for the Giants but didn't get 1978 Topps Giants cards:
- Hector Cruz (.223 with 6 HR in 197 AB)
- Jim Dwyer (.225 in 173 AB)