Jose Berrios presents a fascinating case study in fantasy baseball volatility this season. While the Toronto Blue Jays right-hander has shown flashes of dominance, metrics suggest fantasy managers should approach him cautiously heading into the season’s second half.

The Great Jose Berrios Exodus

Fantasy managers are voting with their rosters, and the verdict on Berrios is decisive. PFSN users have executed 13 trades involving the veteran starter in early July, with 10 of those representing managers looking to move on from the Toronto pitcher. This 77% sell rate among active traders signals a clear lack of confidence in Berrios’s ability to maintain his current form.

This becomes particularly telling when considering Berrios’s mixed results against different levels of competition. While he has posted impressive numbers against certain teams, his broader performance metrics paint a more concerning picture for fantasy purposes.

Jose Berrios Last 6 Starts:

3-1
38.0 IP
1.66 ERA
0.95 WHIP
.191 OPP AVG
33 K / 11 BB#LightsUpLetsGo pic.twitter.com/mN2O2NjdE7

— Sportsnet Stats (@SNstats) July 2, 2025

The most striking development in Berrios’s profile is his dramatic shift in effectiveness against left-handed hitters. Last season, lefties managed just a .103 ISO against him. However, that figure has ballooned to .190 this year, indicating a significant drop in his ability to get lefties out.

This downturn carries massive implications for fantasy value. Left-handed hitters typically represent 40-45% of most major league lineups, meaning Berrios faces them virtually every start. His ISO allowed nearly doubling suggests a mechanical issue, an adjustment by opposing hitters, or simple regression.

The timing of this decline coincides with other concerning trends. Beyond the lefty struggles, his opponent barrel rate has reached a career high. This becomes particularly troubling when combined with his declining chase rate, which has dropped for the second consecutive season.

The decline in chase rate represents a double-edged concern. While it might initially seem positive, suggesting improved command, the context matters. When chase rates drop alongside rising barrel rates, it typically means hitters are more selective and patient, waiting for better pitches to attack. This combination often precedes sustained periods of poor performance.

These numbers create a perfect storm where Berrios faces more disciplined hitters who are simultaneously making better contact when they do swing. The outcome of this combination rarely favors pitchers over extended periods.

Perhaps the most misleading aspect of Berrios’s 2024 campaign was his dominance against the Red Sox and White Sox, where he posted a 1.05 ERA. While that appears impressive, it can create a dangerous illusion for fantasy managers who might extrapolate this success across his entire workload. Against all other 28 teams, Berrios has struggled to a 4.62 ERA.

The sample size disparity makes these splits particularly unreliable for projection purposes. Two teams represent roughly 11% of his total workload, meaning 89% of his starts have produced significantly worse results. Fantasy managers banking on continued dominance are essentially betting on an outcome that contradicts most available data.

Smart fantasy players recognize these splits as noise rather than signal, explaining why PFSN users are actively moving away from Berrios despite his occasional brilliant outings.