Buster Posey spent a decade proving the Giants never needed a second catcher because he'd play every inning that mattered. In his first summer running the baseball operation, his old position has become the one the organization can least count on: Daniel Susac is out for the season with a fractured kneecap — his third injured-list stint of the year — and the No. 1 job for September belongs to Drew Cavanaugh, a 17th-round pick out of Florida Southern. The bitter twist is that the defense bet worked: the Rule 5 kid Posey kept is out-framing and out-defending the Gold Glover he traded. It's the bats and the bodies that betrayed him.

There is a particular cruelty in the position you know best turning on you.

Buster Posey caught 1,092 games for the San Francisco Giants. He caught two clinchers with a body that was actively negotiating its own retirement. He caught, most famously, through a shattered ankle and back into three World Series. If there was ever a man in this organization who understood, in his ligaments, what the position costs — the wear, the foul tips, the way a knee stops being yours somewhere around age thirty — it's the one now sitting in the president's chair.

So it lands as something close to fate that in Posey's first full summer running baseball operations, as the SF Standard's John Shea reported this week↗ (external source, opens in a new tab), the state of his old position is, in Shea's words, "the most problematic in recent memory." The Giants have three catchers who had never played a big-league inning before this year. They have combined to start 72 games and hit .243 with a .668 OPS. And the one they'd built the whole thing around is done for the year.

Daniel Susac fractured his left patella by fouling a ball off his own kneecap. It's his third trip to the injured list in 2026 — elbow, then back, now the knee. He is, by the strict accounting of a lost season, exactly the kind of luck that finds a 41-and-change ballclub in August. But the injury is only the visible wound. The deeper problem is structural, and it's the one Posey built himself.

The subtraction that worked, and the one that didn't

Go back to May. Posey took a two-time Gold Glover in Patrick Bailey — a catcher who, from 2023 forward, had been the best defensive backstop in the sport — and shipped him to Cleveland to hand the everyday job to a Rule 5 pick he'd grabbed from the A's the previous December. I called that trade, at the time, Posey learning to subtract: a franchise legend deciding, as an executive, that his roster needed less rather than more.

Here's the part I didn't have then, and it complicates the eulogy. The defense bet was correct.

Susac, this season, ranks tied for sixth among all catchers in Fielding Run Value at +7↗ (external source, opens in a new tab). Bailey — the Gold Glover, the guy whose glove was supposed to be irreplaceable — sits at +5. Susac is tied for second in the majors in framing. He's tied for sixth in Defensive Runs Saved at +8; Bailey is at +6. On the specific thing that made the Bailey trade feel like a heist against the Giants — the catching, the framing, the pitch-stealing artistry — the kid Posey kept has been better than the man he dealt. That's not spin. That's Statcast.

Which means the front office read the glove correctly and got mugged by everything else. Susac hit .195 over his final 44 games before the kneecap ended it. The bodies gave out — three IL stints in one summer for a 24-year-old. You can win the argument you set out to win and still lose the season, and that's roughly what happened here.

What's actually behind the plate now

Strip away the names and the depth chart reads like a Double-A callup sheet, because it nearly is.

The No. 1 job the rest of the way goes to Drew Cavanaugh, a lefty bat and a 17th-round pick out of Florida Southern. He opened the year two levels down, in Richmond, and forced his way onto the roster with his bat. To his credit, Cavanaugh isn't flinching. "A lot of these guys we're facing, I faced in Triple-A," he said. "Nothing feels overwhelming." Big-league arms have knocked his average around, but he's carrying a .363 on-base percentage — the one offensive signal in this whole group that scouts actually like.

Behind him is Jesús Rodríguez, the utility man the Giants got in the Camilo Doval trade↗ (external source, opens in a new tab) — hitting .235, currently shelved with an elbow issue, hoping to be back in two weeks. He keeps six gloves at his locker because he's played second, left, and right this year. "It's tough to have three catchers," he said, and he means it as hope, not complaint: he wants the three of them to stay together.

And behind him is the void. The Giants didn't acquire a catcher at the deadline. They drafted no catchers. When Susac's diagnosis came down Monday, they had to scramble Zach Morgan up from Triple-A — a kid who watched the first two innings from his airplane seat, landed, got to the yard in the third, and was optioned back the same night so they could sign the veteran Andrew Knizner, who'd just opted out of a minor-league deal with the Red Sox. That's not a depth chart. That's a group text.

The wear and tear knows his name

Tony Vitello — and it is still strange to type that the Giants' manager is the former Tennessee college coach — put it about as plainly as it can be put. Catcher, he said, is the hardest position both to trust and to survive, the one where the day-to-day toll shows up first. Then he nodded down the bench: "Buster's was as good as anybody's."

That last line is doing quiet work. Vitello is talking about Susac's kneecap and Rodríguez's elbow, but he's saying it two lockers from a president of baseball operations who retired at 34 because catching had used him up. Posey knows the actuarial table on this position better than anyone in the building. He lived it. And now the job in front of him is to solve it for 2027 with an organization that, at the one position he'd think he could scout in his sleep, has almost nothing on the shelf.

There's a version of this that's a crisis and a version that's just a bad-luck season laid over a thin farm system. I lean toward the second — the defense grades say the process wasn't broken, and the SF Standard's own reporting keeps noting that the farm system is suddenly loaded↗ (external source, opens in a new tab), just not with catchers. Posey will almost certainly add a veteran this winter, someone to lead or at least steady the room. Susac, healthy, is a legitimate everyday defender with a bat that started hot enough to dream on. This is fixable.

But you don't get to pick which position tests you. And there's no missing the shape of it: the best catcher this franchise ever had, now the man responsible for the whole thing, staring at the one hole he's least equipped to have to explain. The Susacs keep coming through San Francisco — Andrew backed Posey up in 2014; Daniel is the top guy now. The position keeps grinding people down. It ground Posey down first. He, of all people, will not be surprised by any of it.

No bet here — this is a clubhouse read, not a card. The Giants play out a sold-off summer, and the most interesting man in the building is watching his old position the way you watch an old injury flare in the cold.