Last Updated on April 22, 2026 12:56 pm by ZUWP Automation
The Marlins host St. Louis in a midweek contest where the pitching mismatch on paper is hard to ignore.
Pitching Matchup
The numbers tell two very different stories on the mound. Junk’s surface ERA of 4.15 is misleading. His FIP sits at a staggering 1.57, meaning the results have been far worse than his underlying performance deserves. He’s been getting hitters out at a dominant rate, striking out 26.3 percent of batters faced with a K/9 of 10.4. His swinging-strike rate of 12.7 percent is elite, and hitters are making contact on only 53.8 percent of swings on pitches outside the zone. That’s a pitcher who is genuinely difficult to square up.
Kyle Leahy is a different conversation entirely. His ERA of 7.20 through one start is backed by a WHIP of 2.00, and his FIP of 3.99 is far more forgiving than what he actually delivered. The real red flag is a K/9 of just 1.8 and a strikeout rate of 4.2 percent. He’s not missing bats. His contact rate allowed sits at 88.9 percent, and hitters are making contact on 71.4 percent of swings outside the zone. When a starter can’t get swings and misses even on pitches off the plate, trouble tends to follow.
The edge here belongs to Junk, and it isn’t particularly close.
Lineup Analysis
Neither team entered this series swinging hot bats, but the Cardinals face a genuine problem against Junk’s profile. His ability to generate weak contact and chase swings outside the zone means St. Louis hitters will need to show elite plate discipline just to get into deep counts. His out-of-zone contact rate allowed of 53.8 percent is a punishing number for any lineup.
Leahy, on the other hand, gives Miami’s hitters a real opportunity to do damage. A contact rate allowed of 88.9 percent means the Marlins should be putting the ball in play consistently. Whether Miami can convert that contact into runs will come down to situational hitting, but the conditions are favorable. Leahy’s walk rate of 8.3 percent also suggests he may struggle to throw strikes consistently, which could lead to traffic on the bases early.
The single most important factor in this game: Janson Junk’s ability to miss bats at an elite rate against a Cardinals offense that will be facing a pitcher with real swing-and-miss stuff for the first time in this series.
Situational Context
This is a midweek series matchup at loanDepot park, and both teams are sending pitchers with limited sample sizes in 2026. Leahy has just one start under his belt this season, and Junk is also working off a single outing. That makes the underlying metrics more meaningful than the raw results. Junk’s FIP of 1.57 suggests his one start was dominated by bad luck on balls in play, with a BABIP of .385 well above league average. The process was cleaner than the box score showed.
Standings Impact
Without current standings data in hand, the precise division picture is unclear. What is clear is that neither the Cardinals nor the Marlins can afford to hand away winnable games in April. Early-season losses compound quickly, and a game where one team has a significant pitching advantage is exactly the kind of spot where separating from the pack becomes possible. Miami has the better arm on the mound tonight, and home field adds one more layer of comfort.
The Call
Back the Marlins at home. Junk’s FIP of 1.57 and swinging-strike rate of 12.7 percent point to a pitcher who is generating genuine deception, not just benefiting from weak competition. Leahy’s 1.8 K/9 is an alarm bell. A starter who can’t miss bats in today’s MLB gets exposed quickly, and Miami’s lineup should have enough opportunities to do real damage. The pitching mismatch is the story here. Take Miami.
