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The Nationals are rebuilding their infield in real time, and Seaver King keeps making it harder to wait

With CJ Abrams shifting to second base and No. 4 prospect Seaver King homering in four straight games at Triple-A Rochester, Washington's front office is trying to manage a rebuild it may no longer fully control. Here's what's happening - and why it matters for the next few years.

The Nationals are rebuilding their infield in real time, and Seaver King keeps making it harder to wait

The Washington Nationals didn't announce a trade or sign a name-brand free agent this week. What they did was arguably more consequential: they began physically rearranging where their best young players stand on a baseball field, and one of those players responded by hitting a home run for the fourth straight game.

The sequence started on August 14, when manager Blake Butera told reporters - including ESPN and MLB.com - that All-Star shortstop CJ Abrams is moving to second base, vacating the only position he has played during his five seasons with the club. Butera said Abrams has begun working out at second, and that the transition will be more "multiday than multiweek," with Abrams swapping spots with second baseman Nasim Nuñez.

The numbers behind the decision are stark. Abrams carries a -13 run value and a league-low -17 Outs Above Average, and his 19 errors are the most among all players. He leads the majors in errors - just three shy of his career high from 2023 and 2025. Nuñez, meanwhile, is the guy going the other direction. He has nine errors and a .965 fielding percentage at second base, and leads the majors in range factor at the position.

Butera put it plainly to reporters. "Just thought this was the best thing for our team going forward," he said. "We think with those two up the middle and Nasim playing more shortstop gives us the best chance."

Abrams didn't hide what it cost him to accept the move. "That's just where I've been playing my whole life, and I believe I can be a great shortstop," he said when asked about his long-term positional future. He went along with it anyway. The Nationals made this change in mid-August instead of next season, specifically to get in-game reps and feedback to carry into the offseason.

The deeper story, though, is what the move signals about who's coming. The Nationals used first-round picks on shortstops Seaver King and Eli Willits in 2024 and 2025. Willits, selected first overall in 2025, is Washington's No. 1 prospect per MLB.com, while King ranks fourth. You can't have three shortstops at the big-league level. Something had to give, and Abrams - already a two-time All-Star and under club control through 2028 - was the one with the bat to justify a positional change rather than a trade.

King won't stop hitting

Enter Seaver King. On August 20, MLB.com reported that the 2024 first-round pick made his professional debut at third base for Triple-A Rochester. He did not go quietly. The 23-year-old homered for the sixth time in the past 10 games, slashing .375/.467/.719 in 16 contests since returning from a left oblique strain on July 30, and tallied three hits, a walk, two runs and three RBIs to help the Red Wings to a 7-2 win over Omaha. By August 22, MLB.com's prospect page confirmed King had homered in four consecutive games.

He came into this stretch already dangerous on paper. Earlier this summer, before the oblique strain sidelined him in early July, King was slashing .333/.416/.565 with seven home runs, 12 doubles, four triples and 38 RBIs through 45 games at Triple-A.

The third base reps are part of a concurrent position switch at the minor league level. King had played third base in 36 games in 2024 with Wake Forest while starring in the ACC, but since entering Washington's organization he has played 213 games at shortstop and 12 at second base. Now the Nationals are quietly adding third base to his repertoire, apparently banking on his athleticism to handle multiple spots as they figure out how to fit him, Abrams, and Nuñez into the same roster.

That calculus gets complicated by one fact: King keeps making the decision for them. One of the biggest storylines down the final stretch of the 2026 season for Washington is whether they are going to call him up, with the Nationals reportedly "reluctant" to promote the star prospect, preferring he get more reps with Triple-A Rochester given he has played less than 50 games at that level. Rosters expand on September 1, when MLB goes to 28 men, which gives Washington a natural on-ramp to promote King without immediately inserting him into a full-time role.

The front office's reasoning, per The Athletic's Spencer Nusbaum via Yahoo Sports, is about development rhythm, not doubt. The organization believes staying in Rochester is best for his long-term development so he can reach his lofty projected ceiling as a former No. 10 overall draft pick. But King is making it hard for the Nationals to keep him on the farm.

What it all adds up to

The Nationals are doing something they haven't managed cleanly in years: running a live rebuild without blowing up what's already working. Abrams, for all his defensive liabilities, is part of a plan to reconstruct the Major League infield around a younger core rather than away from it. He is slated for free agency after 2028, meaning the Nats still have him for the rest of this season and two further campaigns. That's enough time to see whether second base is genuinely his long-term home or just a bridge.

As for King, he improved his chase rate significantly this season, getting it down from around 40% in Double-A last season to 28% at the start of his Triple-A stint. The power surge since his return from injury adds another dimension to a player who was a major question mark just twelve months ago. He had massive struggles during the 2025 campaign before tearing it up in the Arizona Fall League and carrying that momentum into this season.

The Nationals will not win the NL East this year. Nobody is confusing this for a pennant race. But between Abrams sliding over, Nuñez anchoring short, and King homering every day in Rochester, the infield picture for 2027 and 2028 is coming into focus faster than anyone anticipated - and King's home run on August 21 at third base was his first professional rep at the position in affiliated ball.

Sources