Imagine this: Isiah Kiner-Falefa as the Red Sox’s starting second baseman. It’s not exactly the dream scenario many fans had in mind, but here’s the reality we’re dealing with. And while it’s easy to focus on what IKF isn’t—namely, the power-hitting star we all hoped for—let’s shift the conversation to what he is: a defensive upgrade in a lineup that desperately needs one. After all, the Red Sox have publicly committed to prioritizing defense, and this move might just be the first step in that direction.
Before IKF entered the picture, the second base situation looked murky. Marcelo Mayer was penciled in at third, with whispers of Nick Sogard, Romy González, or even a David Hamilton platoon filling the void at second. But let’s be honest: none of those options felt like a slam dunk. My instincts told me IKF was the safer bet defensively. Romy, while flashy at times, had me on edge. Hamilton and Sogard? They didn’t exactly pass the eye test, and their demotions to Worcester only reinforced that.
But here’s where it gets controversial: Is IKF really the defensive anchor we need? Let’s dive into the numbers. Baseball Reference’s Total Zone Total Fielding Runs Above Average (Rtot) metric measures a player’s defensive value in runs saved or lost compared to the average player. For IKF, the stats tell an interesting story.
In 2024, split between the Pirates and Blue Jays, IKF posted a .990 fielding percentage at second base—above the MLB average of .984. His Rtot was +5 runs in just 56 games (376 innings). Baseball Reference projects that to a +17 Rtot over 1,200 innings (roughly 135 games). Not too shabby. In 2025, his 13-game stint at second for the Blue Jays saw a perfect 1.000 fielding percentage, though in a small sample size, with an Rtot of +1 (projected to +34 over 1,200 innings).
Now, let’s compare that to Romy González. In 2024, Romy logged a .964 fielding percentage at second base for the Red Sox—below the league average of .983—with an Rtot of -4 (projected to -32 over 1,200 innings). Ouch. While he improved slightly in 2025 (.978 fielding percentage, Rtot of -2, projected to -9), those negative numbers don’t align with the Red Sox’s defense-first mantra. And with groundball-heavy pitchers like Crochet, Ranger Suárez, Sonny Gray, and Bello in the rotation, every defensive misstep could cost us dearly.
David Hamilton? His 2024 Rtot of +5 (projected to +21) and 2025 Rtot of +5 (projected to +16) are solid, but his .973 fielding percentage in 2025 was still below league average. Nick Sogard, meanwhile, had a perfect 1.000 fielding percentage in limited action but posted negative Rtot projections (-12 in 2024, -4 in 2025).
And this is the part most people miss: IKF’s defensive consistency makes him the safer choice over González, Hamilton, or Sogard. Sure, Romy’s bat plays well against lefties, but his defensive liabilities outweigh that benefit. Hamilton and Sogard? They’re bench players at best. IKF’s versatility is a bonus, but his steady glove is the real selling point. I’d rather see him anchor second base than gamble on a platoon system.
So, should IKF be handed the keys to second base? Absolutely. But here’s the question I’ll leave you with: In a league where defense is increasingly the difference between making the playoffs and staying home, is IKF’s glove enough to justify his spot in the lineup? Let me know your thoughts in the comments—agree or disagree, I want to hear from you.
