Justin Martinez: The Reliever Nobody's Talking About Is Flashing Elite Stuff

Justin Martinez is sitting at 6% roster ownership, generating zero buzz in mainstream fantasy circles, and quietly posting a sub-1.40 FIP over his last 9.3 innings with a strikeout rate that borders on absurd. Early signs suggest the Arizona right-hander could be emerging as a late-season weapon — and WaiverScout flagged him before anyone else.

The Signal Trail

We first tagged Martinez as a Watch back on September 7, when he was rostered in just 5% of leagues. The algorithm briefly reclassified him as a deprioritize on September 19, but the underlying skills data never wavered — and now the signal has strengthened enough to push him back into Watch territory. That kind of persistence in the data, even through a brief dip in classification, is exactly the pattern that precedes breakouts on the waiver wire.

The Numbers Are Loud

Let's walk through the rolling windows, because they tell a compelling story:

  • 30-day: 0.00 ERA, 13.55 K/9, 1.38 FIP across 9.3 innings
  • 14-day: 0.00 ERA, 13.4 K/9, 0.76 FIP across 4.7 innings
  • 7-day: 0.00 ERA, 10 K/9, 0.88 FIP across 2.7 innings

The ERA is a pristine zero across all three windows. That's unsustainable in any sample, sure. But the FIP — the number that strips out luck and isolates pitcher skill — is what demands your attention. A 0.88 FIP over the most recent stretch and a 0.76 FIP over 14 days tells you the peripherals are backing up the surface-level dominance. Martinez isn't just getting lucky. He's missing bats at an elite clip and limiting damage when contact does occur.

Strikeout Dominance

A 37.5% strikeout rate is the headline skill here. That number puts Martinez in rare air among relief pitchers — the kind of territory occupied by names like Tanner Scott and Abner Uribe when they're at their best. In a relief role where high-leverage outs are the currency, that kind of swing-and-miss ability is the single most bankable trait a fantasy manager can target.

The Ownership Window

At 6% rostered with no change in ownership velocity over the past week, Martinez remains essentially free in most leagues. This player isn't on anyone's radar yet — no major fantasy publication is writing about him. That's your edge. When a reliever with this K-rate and this FIP starts converting opportunities into holds or saves, the ownership spike will be sudden and steep. By then, you're competing for him on waivers instead of casually adding him from the free agent pool.

The confidence level here is still early signal — we're working with just 9.3 innings over the 30-day window. That's enough to identify elite skills but not enough to declare him a must-roster asset. The sample demands patience.

Comparable Context

If you're rostering speculative relievers like Kenley Jansen based on name value or Uribe on upside, Martinez deserves to be in the same conversation. The K-rate and FIP profile are there. What's missing is the established role — and that's precisely why he's still available.

Verdict: Watch

Justin Martinez is a Watch. The skills are real — a 37.5% strikeout rate and sub-1.00 FIP over the recent window are not noise, even in small samples. But with limited innings and an undefined role, the move right now is to monitor, not chase. Add him to your watchlist. If you're in a deep league or desperate for ratio help down the stretch, a speculative add is defensible. WaiverScout identified this signal early, and the data has only gotten louder. Don't be the manager who sees these numbers for the first time at 30% ownership.