Cincinnati Reds

The Cleveland Guardians, Pittsburgh Pirates, and Los Angeles Dodgers are among some of the Cincinnati Reds' biggest rivals.

The Reds' rivalry with fellow Ohio natives the Cleveland Guardians is known as the Buckeye Series. Each season, the winner of the most games between the 2 sides is awarded the Ohio Cup, and the right to call themselves MLB's pride of Ohio.

Like the Reds, fellow NL Central team the Pittsburgh Pirates are another of MLB's oldest clubs, and the 2 sides have built up a long-standing rivalry over the years. Having first met during MLB's 1900 season, the Reds-Pirates rivalry was particularly fierce in the 1970s, and included 4 NLCS battles between 1970–1979.

The 1970s was also the decade in which the Reds and Dodgers established their own rivalry. Between 1970 – 1990, there were 11 seasons in which the 2 sides, in varying orders, made up first and second place in the NL West. Seven of these seasons finished with less than a 5.5 game difference in record between the clubs. In reference to the Reds-Dodgers rivalry, Reds manager Sparky Anderson once said, "I don't think there's a rivalry like ours in either league." The rivalry died down when the Reds moved to the NL Central, but a competitive attitude between the franchises still remains.

Other common matchups include: