Top of the Order: Trevor Story’s Injury Tests Boston’s Thin Infield Depth

Welcome back to Top of the Order, where every Monday, Wednesday, and Friday, I’ll be starting your baseball day with some news, notes, and thoughts about the game we love.

The Red Sox trounced the Angels on Sunday to bring their record to an excellent 8-3 in the early going. But the night before, they lost shortstop Trevor Story to a significant injury that could end his season, when he subluxated his shoulder diving for a grounder. Despite his slow start (67 wRC+), things were looking up for Story. He was fully healthy and at his natural position for the first time since he joined the Red Sox; he had slid over to second upon signing with the team ahead of 2022, when Xander Bogaerts was still around, and played just 43 games last year after undergoing internal brace surgery on a torn UCL in his elbow.

Indeed, Boston entered this season optimistic that Story’s health and production would return. And after offensive anchor Justin Turner left in free agency, the Sox were relying on Story’s righty bat to balance out a heavily left-handed middle of the lineup, which features Rafael Devers, Masataka Yoshida, and Triston Casas. Without Story, that job falls mostly on Tyler O’Neill’s chiseled shoulders.

Story’s injury is the second that Boston’s middle infield will have to weather; offseason acquisition Vaughn Grissom was set to play second base, but he strained his hamstring early in spring training and isn’t expected to be back until late April at the earliest. That leaves a ragtag middle infield, with two more lefties, Enmanuel Valdez at second and David Hamilton at short, expected to see most of the playing time up the middle. Righties Pablo Reyes and Bobby Dalbec will fill in against tough lefties, though the latter is more of a corner infielder. Valdez has been anemic in his first 35 plate appearances this year — his wRC+ is -13 — but he was solid in much more extensive rookie campaign last year, with a 102 wRC+. Hamilton’s start has been the opposite story: He mashed his first homer on Sunday in his first game back up after posting a 25 wRC+ in his first 39 big league plate appearances in 2023.

Both are decent role players and average-ish hitters (Hamilton is a 50-grade hitter, Valdez 45), with Hamilton also possessing blazing speed. But even when Grissom comes back, at least one of them will have to be a bit more than that somewhere on the middle infield. More importantly, O’Neill needs to keep hitting something like he is (I don’t think he’ll keep up his 73-homer pace), and Yoshida needs to get going.

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Unlike the Red Sox, the Nationals are doing what was generally expected of them: playing .333 ball. What does intrigue me, though, is how the defense has been aligned.

Despite keeping Victor Robles around instead of non-tendering him, he was relegated to the bench to start the year, only picking up a couple of starts (one against a lefty, and one with Jesse Winker out due to illness) before hitting the IL after suffering a hamstring injury in that second game. Instead, the Nationals not only rostered two lefty-hitting, outfield-playing non-roster invitees in Winker and Eddie Rosario, but they’re starting them both — with Rosario in center!

Rosario is 32, not fleet of foot (13th-percentile sprint speed), and not a very good outfielder; he was solid last year in left field but graded out negatively there in 2022, and of course center requires covering more ground. Even with Robles hurt and Jacob Young (who profiles more as a fourth outfielder-type) on the roster in his stead, playing Rosario up the middle doesn’t really make much sense. Offseason signee Joey Gallo is only 30, and he is more experienced and has performed better out there than Rosario has in his career — Gallo has five defensive runs saved in 463 innings patrolling center — but he has been relegated to first base entirely so far, with Joey Meneses as the regular designated hitter.

In a vacuum, I can understand why Washington wants to keep Lane Thomas in one spot; he’s the only outfielder on the roster who starts against righties and lefties alike, and his strong arm plays well in right. I can also understand, in a vacuum, wanting Meneses at DH, leaving Gallo (the only other player with extensive experience there) at first; Meneses isn’t a good first baseman! But if those decisions lead to playing an average-at-best left fielder in center field, one of the most consequential defensive positions on the diamond, they’re not the right ones.

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One position switch that is paying off, though, is Spencer Steer’s multi-season willingness to keep switching positions. Ostensibly, he’s a third baseman; that’s where he played most of his innings in his first big-league action in 2022 and where he started out last year. But when Elly De La Cruz and Matt McLain came up, Steer slid across the diamond to first with Joey Votto sidelined by shoulder surgery. When Votto came back and Christian Encarnacion-Strand came up? No problem, Steer made 13 starts at second and played the outfield for the first time outside of nine innings in 2022.

All that bouncing around in 2023 didn’t affect his bat, as he finished sixth in Rookie of the Year balloting and put up a 118 wRC+. But having a full year of experience at the plate and settling in as the full-time left fielder could have Steer really turning a corner here in 2024. His 237 wRC+ is of course unsustainable, and it’s just nine games, but he’s walking at the same rate of over 10% and striking out less. He also has 10% of last year’s barrel total (three already) in just 6% of the plate appearances.