Cy Young has pitched the most innings for the Boston Americans in a season, with 384.2 innings in 1902.

Before 1920, Walt Wilmot had the most at-bats for the Chicago Colts in a season, with 604 at-bats in 1894.

Before 1920, Richard Hoblitzell and Arlie Latham were tied for the most at-bats for the Reds in a season, with 622 at-bats.

Juan Pierre has the most at-bats for the Cubs in a season, with 699 at-bats in 2006.

John Clarkson has pitched the most innings for the Chicago White Stockings in a season, with 623 innings in 1885.

Will White has pitched the most innings for the Cincinnati Red Stockings in a season, with 577 innings in 1883.

Pedro Martinez has the most runs above average with 20+ starts in a season, with 79.4 in 1999.

Vida Blue had an ERA of 6.64 in his rookie season in 1969.

Vida Blue has an ERA of 3.39 since 1972.

Roger Clemens fanned 126 batters in his rookie season in 1984.

Vida Blue has an ERA of 3.42 since 1973.

Dwight Gooden has the highest career win percentage for the Mets when starting 100+ games, at .649.

Bob Gibson struck out 268 batters in 1968.

Warren Spahn had his lowest ERA in a season in 1953, with an ERA of 2.10.

Pedro Martinez has the most runs above average with 20+ starts in a season, with 79.4 in 1999.