Rollie Fingers would become a baseball Hall of Fame Relief Pitcher predominantly for what he accomplished with the Oakland Athletics but his lone Cy Young Award took place when he played for Milwaukee.  As a Brewer, Fingers would win the Cy Young and the MVP in 1981 and arguably had the most dominating season as a closer in Brewers history.

Milwaukee would be the last team that he played for in the Majors, and with the Brewers, he had 97 Saves with an ERA of 2.54.  Fingers was inducted into Cooperstown in 1992, and Milwaukee honored him further by retiring his number 34 the same year.

An amazingly named baseball player (though he was not the behemoth you would have expected), Moose Haas was a Milwaukee Brewer for ten of twelve of his MLB seasons.  Haas was a decent control pitcher who would finish in the top ten in BB9 four times and ERA and FIP twice.  He would have 16 Wins in 1980, the season in which he led the American League in Winning Percentage.  Haas would have a record of 91-79 with an even 800 Strikeouts.

Realistically, B.J. Surhoff accomplished more with the Baltimore Orioles, but B.J. Surhoff was a Milwaukee Brewer for his first nine MLB seasons, the last of which saw him bat .320.  Surhoff would accumulate 1,062 Hits as a Brewer with only 323 Strikeouts.

Jim Slaton was a key Starting Pitcher for Milwaukee through the 1970s and as of this writing still holds the team record for Wins and Innings Pitched.  Slaton won 10 or more Games in nine seasons and went to the All-Star Game in 1977.  He also has a World Series win in their lone appearance in the Fall Classic, which was during his second Brewers run when he moved to the bullpen.

With Milwaukee, Slaton pitched in 268 Games and had a record of 117-121.