Nationals and Orioles Finally Made a Trade After Decades. It Was a Minor-League Swap.

The Washington Nationals and Baltimore Orioles share a regional rivalry, a television dispute that’s dragged on forever, and a whole lot of history. What they never shared — until Tuesday — was a trade.

According to Spencer Nusbaum of The Athletic, the two franchises completed their first-ever deal: Washington acquired right-handed pitcher Kyle Nicolas from Baltimore in exchange for infielder Randal Diaz. Nicolas immediately got sent to Triple-A Rochester.

Let’s be clear. This is not the kind of trade that reshapes a division race. Nicolas is a 27-year-old reliever with a 4.96 ERA across 93 big league appearances. He got flipped from the Reds to the Orioles earlier this season and never threw a pitch for Baltimore at the major league level. Diaz is a shortstop who hasn’t debuted in the bigs yet, with a .235/.332/.320 career slash in the minors. These are depth pieces moving around.

But it’s still notable. The Orioles and Nationals began play as different franchises in different leagues at different times. Baltimore joined the American League in 1901 as the original Milwaukee Brewers franchise relocated. The Nationals arrived in D.C. in 2005 when the Expos moved from Montreal. In the two decades since they’ve shared the same metropolitan area, they’ve never traded. Not once.

Why now?

Both teams have reasons to tinker with their rosters. The Orioles have been banged up all season and could use extra arms in the system. The Nationals are playing better than most people expected — they’re hovering around .500 and still deciding whether to sell at the deadline or try to hang in the wild card conversation. Adding pitching depth makes sense either way.

Fans shouldn’t expect this to open any floodgates. The two front offices have historically kept their distance. There’s been plenty of chatter over the years about why they’ve never swapped players — geographic proximity, the MASN TV rights mess, maybe just organizational stubbornness — but whatever the reason, it took a low-stakes minor league transaction to finally break the seal.

It’s weird to call a trade between a 27-year-old reliever and a minor league shortstop historic. But it is. For a couple of franchises that spent two decades pretending the other didn’t exist, this is at least a start. Whether they ever do it again? Who knows. But at least it happened once.