For the second straight season, MLB has branded a specific weekend as Rivalry Weekend. It features mostly interleague play focused on regional rivalries, so we won't see the traditional matchups like Dodgers-Giants, Cubs-Cardinals or Yankees-Red Sox. Instead, these are geographically-focused or historically-connected pairings.
Credit where due: scheduling these matchups to create something resembling a rivalry on the same weekend for every team is incredibly difficult. MLB did the best it could logistically. With that in mind, let's rank all 15 battles.
15. Diamondbacks vs. Rockies
Given these are two of the youngest teams in baseball with limited division title races between them—though the 2007 NLCS had some drama even if it ended in a sweep—there isn't much history to fall back on. With the Rockies again being one of the worst teams in baseball and the D-backs appearing to be subpar, there isn't much juice here. Both fan bases hate a handful of other teams more than each other.
14. Athletics vs. Giants
Even if Sacramento isn't too far away, the luster is lost from the Bay Series with the A's having left Oakland. There was some good history with A's vs. Giants series in the Bay, including the 1989 World Series, though that was marred by an Earthquake. This year, the A's are in first place—albeit only one game over .500—but they aren't in Oakland yet. The Giants are terrible. This series isn't even in an actual MLB ballpark. It's a bummer.
13. Marlins vs. Rays
The Battle of Florida or "Citrus Series" relies on geography. Given that Florida was long made up of many transplants and snowbirds, you'll often see a mix of Yankees and Red Sox fans in addition to other teams. The die-hard followings for the Marlins and Rays just aren't big enough to have developed huge hatred in interleague games. The Rays look awesome right now, and the Marlins aren't terrible.
12. Orioles vs. Nationals
At least there's a good name here: the Beltway Series. Also, who isn't excited to discuss a long-standing cable television dispute? In terms of history, from 1961-71, after the St. Louis Browns became the Baltimore Orioles, there was some Orioles-Washington Senators rivalry. The Senators became the Texas Rangers, though these Nats aren't even the same franchise. Only about 40 miles separate Baltimore from D.C. I'm sure there are decent number of Orioles fans unhappy that the Nats showed up, but this one doesn't seem all too exciting.
11. Red Sox vs. Braves
For those unaware, there's a connection between these franchises: the Braves franchise originated in Boston and was there until 1953 before moving to Milwaukee, then to Atlanta for the 1966 season. The Red Sox started as the Boston Americans in 1901, meaning these two franchises shared Boston for over 50 years. Is that really all that interesting these days? Here in 2026, it appears to be a mismatch as the Red Sox have been bad and the Braves have been one of the best teams.