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Gary Lavelle was 2-6 with an ERA of 3.84 and 4 saves.
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Randy Moffitt was 0-0 with a 7.94 ERA in 10 games. He was released on August 4.
Tom Griffin was 8-8 with a 3.76 ERA in 22 starts. He was the only SF pitcher to hit a home run in 1981.
Bob Knepper did not pitch for the Giants in 1981. He was traded to the Houston Astros before the season.
Allen Ripley was 4-4 with a 4.07 ERA in 19 games (14 starts).
Vida Blue was 8-6 with a 2.45 ERA. He was the only All Star for the Giants in 1981.
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John Montefusco did not pitch for the Giants in 1981. He was traded to the Atlanta Braves before the season for Doyle Alexander.
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Greg Minton was 4-5 with a 2.88 ERA and had 21 saves in 1981.
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Ed Whitson was 6-9 with a 4.02 ERA in 22 starts.
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Al Holland was 7-5 with a 2.41 ERA and had 7 saves.
Other pitchers for the Giants who didn't get 1981 Topps Giants cards:
Doyle Alexander (11-7, 2.89, 24 starts, led the Giants in wins)
Fred Breining (5-2, 2.55, 45 games)
Bob Tufts (0-0, 3.52, 11 games)