Landen Roupp's FIP Screams: The Surface ERA Is Lying to You

Landen Roupp is posting a 1.89 FIP over his last 10.7 innings while sitting at just 19% rostered. That's a three-run gap between his 7-day ERA (5.05) and his FIP — one of the more dramatic disconnects you'll find on any waiver wire right now. If you trust process over noise, this is your window.

We flagged Roupp as a Watch back on April 5th when he was rostered in just 7.1% of leagues. Since then, ownership has surged +6% in the past week alone, and the underlying skills data has only gotten louder. The signal we identified early is strengthening, not fading — and the classification has escalated to Add Now.

The Rolling Window Breakdown

Here's where it gets interesting. Zoom out from that noisy 5.05 ERA in the last seven days and the picture sharpens considerably:

  • 7-day: 5.05 ERA | 9.25 K/9 | 1.89 FIP | 10.7 IP
  • 14-day: 3.23 ERA | 9.7 K/9 | 1.84 FIP | 16.7 IP
  • 30-day: 3.27 ERA | 9.82 K/9 | 2.01 FIP | 22 IP

The strikeout rate has been elite and remarkably consistent across every window — hovering near or above 9.25 K/9 regardless of the timeframe. The 30-day FIP at 2.01 tells you this isn't a one-start aberration. Roupp has been pitching like a top-40 arm for nearly a month, and the ERA is only now starting to reflect what the FIP has been saying all along.

That inflated 7-day ERA? Classic small-sample BABIP or sequencing noise. When a pitcher's FIP is sitting at 1.89 while his ERA reads 5.05, the ERA corrects downward — not the other way around. This is a textbook buy-low moment masquerading as a bad start.

Workload and Opportunity

Roupp logged 10.7 innings in the last seven days, confirming he's being stretched out in a full rotation role for San Francisco. Over 30 days, he's accumulated 22 innings — the kind of steady workload that makes a pitcher fantasy-relevant beyond streamer territory. He's not being managed with kid gloves. He's getting the ball every fifth day and pitching deep enough to accumulate counting stats.

The fantasy community is starting to notice. Reddit's r/fantasybaseball has been buzzing about Roupp's whiff potential, while RotoWire and FantasyPros have him on their radar. But at 19% rostered, most league managers haven't pulled the trigger yet.

Comparable Context

If you're looking at similarly rostered pitchers in this tier, names like Freddy Peralta and Emerson Hancock are in the conversation — but Roupp's sub-2.00 FIP across multiple rolling windows is difficult to ignore. Early signs suggest he could be emerging as the highest-upside arm of the group.

The Verdict: Add Now

This is a confidence: early signal call — we're working with a small sample, and the ERA hasn't fully caught up to the skills yet. But that's precisely the point. By the time the ERA normalizes and Roupp is rostered in 50% of leagues, you will have missed the window. A sub-2.01 FIP over 22 innings, nearly 10 K/9, and a locked-in rotation spot at 19% ownership is the kind of market inefficiency WaiverScout exists to find.

We told you to watch him on April 5th at 7.1% rostered. The data has only confirmed what we saw. Add Landen Roupp now.