On the surface, everything’s coming up Milhouse for seasoned MLB starter Sonny Gray.
He has started his first season with the Red Sox with a solid 4-1 record. His ERA is better than the league average at a respectable 3.18. And his K:BB ratio is a stellar 21:8 as of mid-May.
But adversity could be brewing in Boston, as Gray’s underlying metrics reveal just how fortuitous he has been up to this point. And if that luck runs out sooner rather than later, fantasy managers could be in trouble.
Let’s take a close look at the reality of Gray’s favorable start and what fantasy owners need to consider as they make their late-spring roster moves.
Gray’s Surface Stats vs Underlying Reality
The Luck That’s Masking the Truth
We’ve talked about luck in pitching before, and how the fielding behind a pitcher can tell a different story. As it turns out, Gray’s ERA doesn’t distinguish his pitching chops from the Red Sox defense bailing him out of situations.
Sure, his surface ERA is 3.1, and his BABIP (batting average on balls in play) is below the league average at .257. But he has also allowed 31 hits in 34.0 innings pitched, and that’s only the beginning.
Statcast tells us his Expected ERA (xERA), which removes variables like defense and park factors and relies solely on a pitcher’s mechanics, is a whopping 5.16. His Field Independent Pitching (FIP), which only measures outcomes a pitcher can control, is above the league average at 4.18. The average exit velocity of hits he’s allowing is high at 87.7 mph, and his left-on-base percentage (LOB%) is quite high at 78.5% according to FanGraphs.
The long and short of it? The batters Gray is facing are making good contact off his pitches and getting on base. The low ERA and BABIP account for the team behind him bailing him out of jams.
Gray is pitching around his problems instead of dominating hitters. And that should have fantasy managers worried.
Why the Collapse Is Coming
Dylan Cease offers fantasy managers sustainable strikeout upside supported by dominant underlying pitching metrics.
Unsustainable Metrics and Regression Triggers
Owners can’t afford to ignore that Gray’s underlying stats are a bushel of red flags. History has shown that those signs can hurt a fantasy roster.
Former MLB starter Bobby Miller is just one example of strong surface stats masking regression triggers. The Dodgers’ starter posted a 3.74 ERA during his rookie season in 2023, but L.A.’s defense behind him helped hide his below-average exit velocity (88.3 mph) and his high LOB% (71.3%). These were all signs of command trouble and shoulder issues that would sideline him for two months in 2024 and lead to a decline in pitch velocity and a decrease in strikeouts.
While Gray hasn’t completely lost command of his pitches, he has been inconsistent with his pitch placement. And inconsistency is a telltale sign that his strikeout rate is decreasing, his ERA will eventually go up, and negative regression will be in full effect.
Sell-High Strategy and Roster Advice
Dillon Dingler provides emerging offensive value for fantasy managers seeking balanced roster upgrades after pitching trades.Ken Blaze-Imagn Images
Maximize Value Before Regression Hits
So what’s a savvy fantasy manager to do? Sell high on Sonny Gray while his numbers are still good.
Managers can get a more durable starter in return, like Dylan Cease. The right-hander has great fastball velocity (97.5 mph) and a high strikeout rate (34.6%) that match his 2.41 ERA, showing he has the underlying mechanics to mechanics to maintain his positive stats. If your roster is struggling offensively, consider a surging bat like Dillon Dingler. The third-year pro is a hot hitter with a strong rest-of-season outlook and could be a steal if you need to move on from Gray this May.
Questions About Sonny Gray, Answered
Why is Sonny Gray’s ERA misleading in 2026?Gray’s 3.18 ERA looks strong on the surface, but his 5.16 xERA and 4.18 FIP suggest he has benefited from favorable luck and defensive support.
What metrics suggest Sonny Gray could regress?His elevated xERA, high FIP, strong left-on-base percentage, and poor contact profile all point toward potential regression.
How does BABIP impact Sonny Gray’s fantasy value?Gray’s .257 BABIP is below league average, suggesting balls in play have been turning into outs at an unsustainably favorable rate.
Should fantasy managers sell Sonny Gray now?The underlying metrics suggest this may be the best time to move Gray before his ERA rises and his trade value drops.
Who are realistic fantasy trade targets for Sonny Gray?Pitchers like Dylan Cease or productive hitters like Dillon Dingler could provide stronger long-term value.
What is the biggest warning sign in Gray’s profile?His 5.16 xERA is significantly higher than his actual ERA, indicating hitters are making better contact than his results suggest.
This story was originally published by Athlon Sports on May 18, 2026, where it first appeared in the Fantasy section. Add Athlon Sports as a Preferred Source by clicking here.
