Sandy Alcantara’s Injury Means a Rockier Road for the Marlins Rotation

Just in case Max Scherzer’s season-ending injury wasn’t enough pitcher-specific tragedy for the week, baseball’s deities have handed down a tale of woe to another of the game’s top pitchers. Sandy Alcantara, last year’s NL Cy Young award winner, may miss the remainder of the season as well. While you could argue that teammate Jesús Luzardo has surpassed Alcantara as a top-of-the-rotation weapon, Alcantara’s history as one of the NL’s top workhorses makes his absence extremely ill-timed for the Marlins, who are currently fighting for their playoff lives against the Diamondbacks, Reds, and Giants.

Alcantara first landed on the IL about a week ago after experiencing discomfort in his forearm. Baseball people take forearm pain as seriously as the denizens of Middle-earth regard inscribed poems on mysterious rings, so Alcantara was shut down for further diagnosis. While he felt healthy enough to play catch on Wednesday, an MRI revealed that his forearm strain stems from a sprained UCL. While the worst-case scenario — namely, a Tommy John surgery that would cost him the rest of this season and likely all of 2024 — does not appear to be the immediate course of action, his 2023 status remains uncertain. When asked specifically about Alcantara’s return, Marlins manager Skip Schumaker avoided being too bullish on the prospects of getting him back this year, saying, “I don’t know. I can’t say yes. I can’t say no. I’ve just gotta be positive. I just gotta keep telling myself day by day and try to take advantage of the opportunity.”

I wouldn’t necessarily characterize Alcantara as having a rough season — I think something like Alek Manoah’s disastrous 2023 better fits that bill — but I can’t deny that it’s been a bit disappointing compared to his 2022. This year, Alcantara has posted his highest ERA as a Marlin, as well as his highest home run allowed rate and lowest strikeout rate. He’s been hit harder than usual, so none of these numbers are pure flukes. But while Statcast’s xERA isn’t happy about his season, ZiPS sees him as have a 3.60 zFIP, reflecting that the declines in his strikeout rate don’t quite match the smaller declines seen in his plate discipline data. It would be hard to say he’s been an ace this year, but the fact that Alcantara is able to eat so many innings has kept his value strong, and he was likely headed for his third-straight season of 200 innings and at least 3 WAR. The Marlins have a young rotation and many of their pitchers have significant injury histories. That makes it extra nice to have one of baseball’s dwindling number of pitchers who can casually go seven innings most nights.

In losing Scherzer, ZiPS estimated that the Rangers lost two percentage points in the playoff race and 0.4 percentage points in World Series probability. ZiPS likes Alcantara slightly better as a pitcher and feels more confident about the replacement options in Texas, so the impact on Miami’s fate is a skosh larger. First, I ran ZiPS assuming that Alcantara would miss the rest of the season:

If we ignore the Padres, who are on the verge of rounding to zero, the Marlins have the toughest road of any of the Wild Card contenders without Alcantara. Now, let’s assume the Marlins get one of those aforementioned Tolkienian rings, use its little-known power to heal elbow and forearm problems, and get Alcantara back into the rotation when he’s eligible on Tuesday:

In a very tight race, getting Alcantara back for a couple starts is still enough to snag the Marlins nearly four percentage points of playoff probability, about twice what a healthy Scherzer would have done for the Rangers. And as importantly, having him for the playoffs would change the top of the rotation enough to give Miami a much better chance of making a deep postseason run.

Naturally, the worst-case scenario would have a significant effect on Alcantara’s long-term outlook:

While the odds still favor Alcantara returning, if worst came to worst, there would be a lot of concerns. Would Alcantara’s changeup still be as devastating if he came back with a 95 mph fastball instead of a 98 mph one? Would the loss of an entire year reduce the chances of him finally finding the strikeout upside of his solid stuff, as Nathan Eovaldi eventually did? What are the chances he could return and still be one of the few pitchers who’s a good bet to throw 200 innings?

Thankfully, we’re not yet at the point where we have to answer those questions. Mason Miller suffered an UCL sprain in May, but has been able to come back with conservative treatment thanks to the A’s showing an abundance of caution in terms of hurrying him back. But if Alcantara’s 2023 is indeed over, the Marlins face a tougher path to the playoffs, certainly a tougher one than when both ZiPS and the FanGraphs playoff odds had them with an over 70% chance of making the playoffs back in July.