The Red Sox are on a mission to bolster their infield, and they've already made a move by agreeing to a one-year, $6MM deal with infielder Isiah Kiner-Falefa. But here's where it gets intriguing: they're not done yet. Sean McAdam of MassLive reports that the team is still actively seeking another infielder, indicating that their quest for infield excellence is far from over. This move aligns with Kiner-Falefa's versatility, as he's a strong defender across multiple positions, though his bat has never been his strong suit. His role as a utility player, providing depth at various positions, could be a game-changer for the Sox, especially with an injury-prone shortstop in Trevor Story and a promising but inexperienced Marcelo Mayer in the mix. Mayer, who can play third or second base, might be better suited at third base, but the Sox would still need to find an upgrade at second base. The current infield mix includes Kiner-Falefa, Romy González, David Hamilton, and others. González, while valuable, is more of a short-side platoon player, and Hamilton brings speed and defense. Kristian Campbell, once considered an outfielder, now seems destined for the infield. Upgrading this group with a reliable everyday second baseman makes perfect sense, but the options are dwindling as the offseason progresses. The top remaining free agents, like Ramón Urías, Luis Urías, and Adam Frazier, might not be an improvement over Kiner-Falefa. The trade market, however, could be Boston's best bet. They've been linked to players like Isaac Paredes of the Astros and Nico Hoerner and Matt Shaw of the Cubs. The Astros, facing an infield logjam, might be willing to part with Paredes, who has some second base experience but hasn't played there since 2023. This could be a win-win for both teams, as the Sox could use his power at third base with Mayer at second, despite their preference for Mayer at third. A trade with the Astros could also address Houston's need for a left-handed bat in the outfield, which the Sox can provide with players like Roman Anthony, Jarren Duran, Wilyer Abreu, and Masataka Yoshida. Hoerner, a top defensive second baseman, would be a perfect fit for the Sox, but convincing the Cubs to part with him might be a challenge. Shaw, while less established, could be a future replacement for Hoerner. The Diamondbacks' general manager, Mike Hazen, has ruled out trading Ketel Marte, but with the addition of Ranger Suárez and the potential trade of pitching prospects like Payton Tolle and Connelly Early, the Sox might be more inclined to make a move. Time will tell if chief baseball officer Craig Breslow can pull off a late-season trade to strengthen the infield. With pitchers and catchers reporting to spring training next week, the Red Sox are in a race against time to complete their roster.