Marte Is Back. The Runs He Scores Won't Be Enough If the Staff Keeps Bleeding Them Away.

The number that should worry Arizona isn't in the lineup card — it's in the run-prevention column. The Diamondbacks have allowed 4.9 runs per game over their last ten games. Over the prior twenty, that figure was 4.2. That's nearly a full run per game of regression, happening right now, with eleven arms on the injured list and no cavalry coming. Ketel Marte's activation ahead of Monday's game is genuinely good news. It is also, by itself, insufficient to solve the equation the pitching staff is writing.

Here is what the offense is actually working with. Corbin Carroll is posting a solid line with eleven home runs and a .370 on-base percentage. Gabriel Moreno has been quietly excellent behind the plate. Geraldo Perdomo has held down shortstop with more production than most expected. And now Marte returns, Jordan Lawlar is day-to-day, and Nolan Arenado is moving back toward availability — a convergence of recovering bats that, on paper, makes this lineup look dangerous again. The optimism is real and earned. But optimism runs into arithmetic when the back of your rotation is Merrill Kelly at a 5.41 ERA, and the two starters who were supposed to anchor the middle of the staff — Zac Gallen and Michael Soroka — are both on the injured list.

I wrote on August 27 that Eduardo Rodriguez and Brandon Pfaadt couldn't pitch every inning of the remaining schedule. That problem hasn't resolved; it's compounded. Rodriguez is 14-4 with a 2.50 ERA, Pfaadt is 7-2 with a 3.27 ERA — two legitimate aces carrying a rotation that, beyond them, is either hurt or struggling. When those two aren't on the mound, Arizona is asking a depleted staff to hold leads that the offense is working hard to build. The three-game winning streak is real. The 7-1 win over San Francisco was real. What's also real is that the run differential over the last ten games is negative despite going 6-4, which tells you the wins are coming in bunches and the losses are coming in floods.

The wild card math is tight but not closed: one game back with 53 to play and an elimination number of 52. That's a position where every game matters, and where the margin for a bad pitching performance collapses quickly. My read is that Marte's return matters most not as an offensive upgrade in isolation, but as a stabilizer — a player whose presence in the lineup forces opponents to pitch more carefully to everyone around him, which in turn reduces the pressure on the offense to manufacture runs against a staff that is going to give some of them back. The lineup with Marte, Lawlar, and Arenado potentially all active is meaningfully better than what Arizona has been running out. But "meaningfully better" still has to overcome 4.9 runs allowed per night.

The next two weeks will answer a question that has been building since June: can this offense score fast enough and often enough to outrun a pitching staff that is structurally short-handed? The Diamondbacks have survived this long on the strength of two elite starters and a lineup that grinds. Marte's return adds a third dimension. Whether that's enough depends entirely on whether the staff can stop the bleeding — and right now, the numbers say it hasn't.