Red Sox Free Agency: 5 Under-the-Radar Players to Target (2026)

As the Winter Meetings approach, the Boston Red Sox find themselves at a crossroads, with critical gaps in their lineup and bullpen that could make or break their upcoming season. While big names like Alex Bregman, Kyle Schwarber, and Pete Alonso dominate the free-agent rumors, there’s a quieter, equally important conversation happening behind the scenes. And this is the part most people miss: there are several under-the-radar free agents who could be the perfect fit for Boston’s needs. Let’s dive into five such players who might not be making headlines but could play a pivotal role in the Red Sox’s 2026 campaign.

1. 1B Rhys Hoskins: The Reliable Backup Plan

If the Red Sox are confident in Triston Casas’ ability to handle first base regularly, Rhys Hoskins could be the ideal complement to lighten his load. At 32, Hoskins isn’t the same powerhouse he was during his Phillies days—especially after missing the 2023 season due to an ACL tear—but he still brings value to the table. In 2025, he batted .237 with a .748 OPS and 12 home runs for the Brewers, despite being limited to 90 games due to a thumb injury. His .332 on-base percentage and knack for drawing walks make him a solid addition. But here’s where it gets controversial: is Hoskins worth the investment, or should the Red Sox aim for a younger, more dynamic option? Let us know your thoughts in the comments.

2. OF Harrison Bader: The Defensive Game-Changer

Boston’s outfield situation is complicated, with Jarren Duran, Wilyer Abreu, and others in the mix. However, if the Red Sox decide to trade one or both, Harrison Bader could be the right-handed bat they need. Bader’s career .245 average and .760 OPS against lefties, coupled with his Gold Glove-winning defense, make him an attractive option. In 2025, he hit .277 with a .796 OPS, 17 home runs, and 54 RBIs across 146 games with the Twins and Phillies. The catch? Bader is likely to command a multi-year deal, which raises the question: should the Red Sox commit that kind of money to an outfielder, or is Rob Refsnyder the smarter, cheaper choice? Weigh in below.

3. INF Ha-Seong Kim: The Bounce-Back Candidate

If Alex Bregman walks in free agency, the Red Sox might turn to Ha-Seong Kim to fill the void at second base. The 30-year-old South Korean had a down year in 2025, hitting .234 with a .649 OPS, but his decision to decline a $16 million player option suggests he’s betting on a rebound. In 2023, Kim was an MVP candidate, batting .260 with a .749 OPS, 17 home runs, and 60 RBIs while winning a Gold Glove with the Padres. His speed—averaging 19.5 stolen bases per season in San Diego—could also address Boston’s need for base-stealing threats. But is Kim a risky gamble, or a high-reward opportunity? Share your take.

4. INF Willi Castro: The Versatile Utility Man

Another middle-infield option, Willi Castro, offers flexibility and switch-hitting prowess. While he’s not as explosive as Kim, Castro was an All-Star in 2024 and stole 33 bases in 2023. His ability to play multiple positions could make him a valuable bench piece, potentially platooning with Romy Gonzalez at second base. However, his .226 average and .679 OPS in 2025 raise questions about his consistency. Is Castro a reliable solution, or just a band-aid for Boston’s infield needs? Let’s hear your opinions.

5. LHP Taylor Rogers: The Lefty Bullpen Anchor

With Brennan Bernardino traded and Aroldis Chapman as the lone proven lefty reliever, the Red Sox desperately need left-handed bullpen help. Taylor Rogers, 35, stands out as one of the best available options. Since 2021, he’s struck out 10.9 batters per nine innings, and his sweeper has a career whiff rate of over 30%. In 2025, he posted a 3.38 ERA across 57 appearances with the Reds and Cubs. But with limited lefty options in free agency, is Rogers the best choice, or should the Red Sox explore trades instead?

As the Red Sox navigate this offseason, these five players could be the difference between a mediocre season and a championship run. What do you think? Are these under-the-radar signings the right move, or should Boston focus on bigger names? Drop your thoughts in the comments—we want to hear from you!

Red Sox Free Agency: 5 Under-the-Radar Players to Target (2026)
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