The quick synopsis of Fred “Firpo” Marberry is a Pitcher who was used in a way that was ahead of its time.

Marberry was one of the best hurlers of the 1920s, and the Washington Senators used him mostly as a reliever, making him one of the first players in baseball to be used in that capacity.  Debuting in 1923, the following season, Marberry led the American League in Games Pitched (50), Games Finished (31), and Saves (15), and in the '24 World Series, he appeared in four games with a 0-1 record with a 1.13 ERA en route to the championship win over the New York Giants.

Over the rest of his run with Washington, Marberry repeated similar seasons, and he led the AL in Games Pitched five more times, Games Finished three more times, and Saves five more times.  Marberry’s value to Washington was incalculable, and he set the template in which other relievers would follow.

Marberry would later have stints with the Detroit Tigers and New York Giants before finishing his career in a return to Washington.  While his 99 career saves seem pedestrian today, he accomplished those over multi-inning appearances and was a closer before anyone knew what that meant. 

Jack Clark had the nickname of "Jack the Ripper," which was precisely the moniker that befit a lethal power.

In 1931, Paul Derringer had a very good rookie year, going 18-8 and helping his St. Louis Cardinals win the World Series.  He had a poor 1932 season, and he was traded early in ’33 to the Cincinnati Reds. His year ended with an abysmal 7-27 record.  It would slowly turn around for Derringer after that.

With the Reds, he would go to six All-Star Games and had four 20 Win years.  While he allowed many Hits, he did not walk very many batters and led the National League twice in BB/9 (1939 & 1940).  In both of those seasons, Derringer finished in the top five in MVP voting, with a third-place rank in '39.  That year, he was also atop the NL leaderboard in FIP (3.15) and SO/BB (2.66), and he helped the Reds win the National League Pennant.  The Reds won the Pennant again in 1940, but this time they won the World Series, with Derringer going 2-1 with a 2.79 ERA.  Derringer would notably finish in the top ten in FIP 13 times and in SO/BB 12 times.  

He would play his final three years in Baseball with the Chicago Cubs.  Derringer retired in 1945 with a 223-212 record and 1,507 Strikeouts.

One of the most underappreciated members of New York Yankees folklore, Charlie "King Kong" Keller was known for his incredible strength and corresponding Home Runs, but he should probably be better known for his plate discipline.  Keller would twice lead the American League in Walks and had an On Base Percentage over .400 seven times, six of which were enough to put him in the top ten that year.  He would also lead the AL in OPS in 1943.

Keller would also help the Yankees win three World Series Rings.  Keller would blast 189 Home Runs in his career and is still in the top fifty all-time in On Base Percentage, OPS, and OPS+.