Foster Griffin: The 2.93 ERA Is Borrowing From the Bank
Deep Dive · WSH SP · 2026-06-28
Foster Griffin is in the best stretch of his season, and the surface line is loud: a 2.93 ERA, a 1.04 WHIP, and an 8-2 record across 17 starts and 98.1 innings. Over the last 14 days he has been untouchable, a 0.89 ERA in 20.1 innings with 24 strikeouts against 4 walks. But the run prevention is outrunning the contact he allows: his FIP sits at 4.30 and his Statcast xERA at 3.85, both well north of the ERA. The gap is almost entirely a home-run story, and it is the one thing standing between "quietly excellent" and "regression candidate." For ratio-sensitive formats, this reads as a sell-high.
TL;DRSkim
| Angle | Read |
|---|---|
| Buy / Sell | Sell-high in ratio leagues; hold for QS and Ks in deeper formats |
| All formats | Rosterable starter, but priced above his true level right now |
| Trade angle | Sell into the hot streak; anchor talks to the 2.93 ERA, not the 4.30 FIP |
| Skill anchor | xERA 3.85 is the fair number, not the 2.93 ERA |
| Ownership | 74.0% rostered (Yahoo) |
The gap between results and process
ERA 2.93 FIP 4.30 xERA 3.85 WHIP 1.04 wOBA .285 (allowed) xwOBA .307 (expected)
He is allowing a .285 wOBA but earning a .307 xwOBA, and the ERA is running roughly a full run under his FIP. This is not the quirk of a single model. FIP and xERA agree the fair ERA lives in the high 3.00s, not the high 2.00s. The skills are good, but the scoreboard is currently flattering them.
What is driving the over-performance: home runs
HR 16 HR/9 1.46 HR/FB 15.5% Barrel% 10.4% HardHit% 37.4% GB% 44.8% FB% 26.7%
Sixteen homers in 98.1 innings is a lot of damage for a 2.93 ERA to absorb, and the batted-ball profile says it is earned rather than unlucky: a 10.4% barrel rate and 37.4% hard-hit rate allowed are both above the league line. He limits the fallout because the homers are mostly solo, a function of his elite walk rate keeping the bases empty. If the free passes tick up or the sequencing turns, the same home-run rate produces a lot more earned runs.
Command and strikeouts are real
K% 24.7% (8.97 K/9) BB% 6.3% (2.29 BB/9) Whiff% 25.1% Chase% 32.6%
The skills underneath are legitimately good. A 24.7% strikeout rate paired with a 6.3% walk rate is a strong strikeout-minus-walk profile, and the 25.1% whiff and 32.6% chase rates support it. This is not a soft-tossing pitch-to-contact arm getting by on defense. He misses bats and rarely beats himself. That is the case for holding rather than dropping.
Splits: he owns left-handed hitters
| Split | OPS | ERA | K% | HR |
|---|---|---|---|---|
| vs LHH | .544 | 3.51 | 30.2% | 4 |
| vs RHH | .686 | 4.49 | 22.2% | 12 |
As a lefty he punishes same-side bats: a .544 OPS and a 30.2% strikeout rate against left-handed hitters. The vulnerability is right-handed bats, who account for 12 of his 16 homers and a .686 OPS. Stream him up against left-leaning lineups and downgrade him against righty-stacked parks.
Stuff+ arsenal
The cutter is the centerpiece and it is a genuine plus pitch.
Pitch Velo Stuff+ Whiff% Note FC 88.0 120 21.7% primary (499 thrown) SI 91.2 111 20.0% CH 82.4 111 32.9% ST 79.8 102 35.4% best whiff FF 91.5 94 19.6% CU 77.8 87 26.2% FS 81.2 85 31.1%
The cutter (Stuff+ 120) anchors a wide seven-pitch mix. The sweeper and changeup are the swing-and-miss weapons, at 35.4% and 32.9% whiff. The four-seam (Stuff+ 94) is the weakest offering and the most likely home-run culprit, a 91.5 mph fastball with limited separation from the cutter. A pitch-mix nudge away from the four-seam would help the home-run rate.
Recent form
L14 20.1 IP 0.89 ERA 24 K 4 BB L30 36.1 IP 1.73 ERA 38 K 6 BB 6/27 @BAL 7.0 IP 0 ER 9 K 6/22 vs MIN 7.1 IP 1 ER 9 K 6/16 vs KC 6.0 IP 1 ER 6 K
This is the heat to sell into. Three straight quality starts capped by a seven-inning, nine-strikeout shutout effort at Baltimore. The trailing windows are spotless, which is precisely why his perceived value is at its peak right now.
Roster context
- Role: established member of the rotation, 17 games and all 17 as starts, no relief usage.
- Workload: 98.1 innings, 9 quality starts, an 8-2 record.
- Health: no IL stint on record this season.
- Ownership: 74.0% rostered (Yahoo).
What to do this week
| Situation | Action |
|---|---|
| You own him | Keep starting him, especially against lefty-heavy lineups. If you can flip the streak for a tier-up bat, do it. |
| He is on the wire | Add in 12-team and deeper formats for the strikeouts and quality starts; temper ERA expectations toward the high 3.00s. |
| Trade for him | Only at a back-end-starter price. Do not pay for the 2.93 ERA. |
| Format notes | Worth more in quality-start and strikeout leagues than in ratio leagues, where the coming home-run-driven ERA climb stings most. |
Foster Griffin is a real strike-thrower with a plus cutter and a hot hand, but a 2.93 ERA sitting on a 4.30 FIP and a 15.5% HR/FB rate is borrowing from the bank. Sell the streak in ratio formats and keep starting the strikeouts everywhere else.