Ferguson Jenkins, RHP
Career: 1965-83, Phillies, Cubs, others
Fun fact: NL Cy Young winner in 1971
He won 20 or more games seven times, including six years in a row from 1967 to 1972. He's also the fifth-winningest pitcher in Cubs history (167 wins), and first in games started (347). Had a career 3.34 ERA, and led the National League in strikeout/walk ratio five times.
"Fergie" is currently 12th all-time with 3,192 strikeouts.