Alright. This sucks. A few thoughts, some more optimistic than others:
1) For his entire career, Woody has been one of the pitchers I've trusted most. He's just a horse. Cool, great personality, a franchise stalwart. Feel terrible for him. Yuck.
2) This obviously hurts our (already very small) chances of winning the WS. Boo.
3) It's also the baked-in risk of building a team around pitching. Pitchers get hurt. I'm not saying I'd rather the org take a different approach (I think the opposite, actually). But we've been pretty lucky on the injury front on the pitching side. Bad time for that to change.
4) I'm not sure this has an intense impact on our Wild Card odds. FanDuel moved from Dbacks +154 to Dbacks +124 and now has seemingly stabilized at +126, Beyond that, of course, it's hard to estimate the aggregated impact. For now, though, it really just means Peralta has to pitch Game 2, and Game 3 becomes a BP-heavy affair.
5) As another poster mentioned, this staff is still way better than 2018. Houser has a better FIP than Chacin did that year. Pitched fewer innings too, so might be fresher. Essentially, Houser/Miley/Rea are going to have to give you the 40 outs or so you would have got from Woodruff in the Wild Card and NLDS rounds, with some BP guys taking on a little added workload maybe too. I would have Rea on the roster because I think he's pitched pretty darn well lately (4ER in 20IP against decent competition).
6) Bottom line: this team needs magic to make a deep run. Baseball teams, even really good ones, always do. That 2011 Packers team had it. 2021 Bucks did too. Both had to deal with massive injury-related difficulties. We'll need more magic than we would have to get deep into October, but not that much more than we otherwise would have to get to an NLCS, especially considering Woody would only have gotten 2 starts in the first potentially 8 postseason games.