Red Sox shuffling infield alignment

The Red Sox are shuffling their infield alignment, most notably dropping Enrique Hernandez from the everyday shortstop role and returning him to his more familiar split between center field and second base, manager Alex Cora announced to reporters Tuesday night (Twitter links via Alex Speier and Julian McWilliams of the Boston Globe). For the time being, utilityman Pablo Reyes will take the reins at shortstop. Cora also started Justin Turner at first base over Triston Casas Tuesday night, calling that the team’s best defensive alignment and noting that the Sox plan to work with Casas on his defense. (Turner, however, made a key error late in the eventual loss.)

Trevor Story’s offseason elbow surgery threw a wrench into the Red Sox’s infield plans, prompting the team to sign Adam Duvall to man center field and push Hernandez to shortstop — a position where he’d logged just 163 innings in the preceding four seasons combined. The Sox also picked up Adalberto Mondesi in a trade with the Royals, hoping he’d bring some additional depth, but he’s yet to play in a game this season due to ongoing injury woes.

Hernandez, 31, proved himself to be a lights-out defender in center field during his first season with the Red Sox in 2021, and Defensive Runs Saved has long credited him as an above-average second baseman. The shift to a less-familiar shortstop position wasn’t necessarily expected to be easy, but it’s been far more difficult than the team envisioned. No player in baseball has more errors than the 14 Hernandez has committed in just 411 innings at short. Defensive Runs Saved (-7) and Outs Above Average (-8) have graded him as one of the game’s six worst defenders at any position so far in 2023. As a team, the Red Sox rank 26th in MLB in DRS (-20) and are tied for last in OAA (-16).

Hernandez’s struggles haven’t been confined to his glovework. This year’s .228/.296/.356 is a near-mirror image of last year’s lackluster performance. When Boston inked Hernandez to a one-year, $10M extension last summer, the hope was surely that his bat would rebound closer to it 2021 levels (.250/.337/.449) and that the versatile Hernandez would continue to provide premium defense at multiple spots. That hasn’t happened, and Hernandez’s trouble on both sides of the ball is just one of the many reasons Boston sits two games below .500 — 14 games out of the division lead and 5.5 games back in the AL wild-card race.

Casas, too, has fallen shy of expectations — particularly at the plate. Were the burly 24-year-old performing up to expectations with the bat, the team would likely be willing to live with any defensive shortcomings at first base. Instead, Casas is hitting just .200/.324/.368 with seven home runs. He’s walking at a sensational 15.8% clip but also fanning in 26.6% of his plate appearances. On top of that, he’s been dinged for -6 DRS and -4 OAA at first base.

The veteran Turner is outperforming Casas in batting average, on-base percentage and slugging percentage alike thus far, and he’s looked comfortable enough in his 133 innings at first base that it seems the Sox are comfortable giving him some increased work there. Cora didn’t declare that there would be a full-time switch from Casas to Turner, but it certainly seems the Boston club is taking a hard look at its defense as it searches for ways to improve.

Story’s eventual return could help to solidify things in the infield, though he’ll likely return as a designated hitter before he takes any reps in the middle infield. Story said just this week that he’s hoping to return in a DH capacity sometime next month, but he isn’t likely to play any defense until August. Yu Chang’s impending return could give the Sox a more experienced option at short than Reyes, though Chang is a utilityman with a career .206/.271/.358 batting line, so installing him into the lineup isn’t likely to help the offense.