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In the selloff of the championship Cubs, perhaps no bigger gap was created than the one left by Anthony Rizzo. Nico Hoerner stepped into shortstop after Javier Baez’s departure, and Patrick Wisdom had already displaced Kris Bryant at third base during the course of the 2021 season. However, the heart-shaped hole at 1B has proven tougher to fill. While we got one of the best storylines in baseball in Frank Schwindel’s brilliant half-season to close out 2021, that magic proved impossible to recapture. Alfonso Rivas was also unable to lock down a roster spot after producing a lackluster 82 wRC+ over 101 games for the Cubs in 2022.
The Cubs front office called out 1B as a position in need of an upgrade going into the season, and made several moves to do so. They signed Trey Mancini to a two-year deal (with an opt-out after this year if he reaches 350 plate appearances), and picked up a squeezed-out Edwin Ríos from the Dodgers. But the primary plan was also the earliest move they made: signing Eric Hosmer.
Released from the last three years of his contract with the Padres (à la Jason Heyward), Hosmer found himself traded to the Red Sox this past season, and released from their roster in December. The Cubs didn’t hesitate much, signing Hosmer to a league-minimum deal (as the rest of his salary remains paid by the Padres) in early January.
Hosmer is a name that’s been bandied about for the Cubs for a few seasons now, but why? Well, I’d argue you only need to look around at the rest of the diamond to see the full picture. While first base is a bat-first position, the Cubs have decided to make one part of baseball their touchstone for 2023: defense. This should be no surprise to anyone who’s watched the first few games, as Marquee is keen to show the Outs Above Average (OAA) of their two star infielders, Hoerner and Dansby Swanson, as well as the Gold Glove wins by each member when introducing the defensive alignment at the start of the game.
Sure enough, with four Gold Gloves to his name, Hosmer stands out even among a highly-decorated defensive unit. However, Gold Gloves are a flawed marker at best. As happens with many other awards, narratives can sometimes lead metrics, so the reputation and hardware might not match the results. Cubs fans should know this well; Ian Happ beat out the Brewers’ Christian Yelich (who’s borderline unplayable defensively) for his first Gold Glove in left field last year.
So what do the defensive metrics say about Hosmer? Defensive statistics are notably noisy. They often vary greatly year to year, and different metrics might disagree on the same player. Yet, they paint a fairly consistent picture about Hosmer. By OAA, last year Hosmer graded out at -2, in the same company as Rizzo. Still, it should be noted that this only puts him in the middle of the pack, with most first basemen falling between +3 and -4. That -2 range is the recent story for Hosmer; he’s ended up around there since 2020. Actually, it’s in his early career that he ran into trouble–ironically during the seasons in which he won his defensive awards. For his career, he’s been worth -38 OAA, and -35 of that came between 2016 to 2019. That seems to suggest either some defensive improvement (or at least a leveling out), in spite of what Padres fans might tell you.
Is that enough? For one thing, Trey Mancini has graded out as well as Hosmer by OAA, albeit over a smaller sample. Beyond the glove, you can’t forget the bat. The story with Hosmer has been the same for years. He’s hitting the ball fairly hard, but directly into the dirt, turning him into one of the game's most-efficient double-play machines. Last year, he led first basemen with a whopping 56.8 ground-ball percentage. Among all players last year, only the Diamondbacks’ Alek Thomas and the Brewers’ Yelich beat him out. Unlike OAA, this is not a recent trend. Going back to 2018, his rate remains 56.6 percent, the fourth-highest in baseball.
So what is it the Cubs think he brings to the table? Well, it seems clear to me that they view him as the best defender available on the roster at first; someone they were able to add for a league-minimum salary; and someone who projects to be an above-average bat (if only slightly) according to ZiPS, with an above-average walk rate and below-average strikeout rate. But you can’t talk about first base for the Cubs in 2023 without talking about the man waiting in the wings, prospect Matt Mervis. While Mervis is not exactly viewed as a defensive wizard, his bat is becoming undeniable. At the very least, he has little left to prove in the minors. Between Hosmer’s low salary, middling performance, and the potential future of the position a mere bus ride away, Hosmer’s got his work cut out for him to hang on to this roster spot for more than a few weeks. Each missed pick and mental miscue will only make his playing time harder to justify.







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