In the world of baseball, the performance of starting pitchers is a fascinating topic, and today we delve into the intriguing realm of 'Stuff+', a metric that sheds light on a pitcher's raw talent and skill. Let's explore the recent gains and declines in Stuff+ and uncover some insightful trends and surprises.
The Rise of the Stuff+ Gainers
Ryan Weathers tops our list, a funny twist for his owners, as his ERA suggests otherwise. Despite the high ERA, his underlying skills are impressive, with a respectable SIERA. What's intriguing is his ability to finally translate his newfound velocity into strikeouts, a skill he lacked in the past. Personally, I think this could be a turning point in Weathers' career, and I'd expect his luck to change for the better.
Logan Gilbert is a standout, consistently maintaining a Stuff+ above 100 all season. His recent surge is remarkable, and the increase in four-seamer usage, coupled with a spike in velocity, is a recipe for success. If Gilbert can sustain this, he'll be an even more valuable asset.
Merrill Kelly's improvement is a welcome change, moving from 'bad' to 'not good'. While his strikeout rate remains low, his return to form could make him a viable option for deeper leagues.
Chris Sale, at 37, is a testament to age being just a number. His Stuff+ and four-seam velocity are at career highs, an insane feat. This is a prime example of why we should never underestimate the resilience and adaptability of veteran players.
Tarik Skubal's injury seems to have worked in his favor, with his Stuff+ reaching new heights. His recent velocity spikes and improved performance make him a top contender, but the high HR/FB rate and LOB% drop are causes for concern.
Jesús Luzardo has finally found his luck, with his ERA dropping below his xERA. His elite Stuff+ the last 30 days suggests further improvement is possible, but the Phillies' pitching staff's high BABIP could impact his performance.
Anthony Kay's above-average Stuff+ is an interesting find, as his strikeout rate doesn't reflect this. His inconsistent strikeout performance is a puzzle, but with strong underlying metrics, he could be a hidden gem.
Kyle Leahy's transition to the rotation has been successful, but his below-average Stuff+ and skill metrics suggest he might be a sell-high candidate in deep leagues.
Brady Singer's velocity decline and lowest Stuff+ since 2023 are worrying signs, especially with his home park being homer-friendly.
The Declining Stuff+ Pitchers
Robbie Ray's decline in Stuff+ is a concern for a 34-year-old. His fastball, once his best pitch, has dipped, and his strikeout rate is at an all-time low. He's overperforming his SIERA and xERA, making him a prime candidate for a sell-high strategy.
Griffin Jax's transformation from reliever to starter is a surprising success, but his Stuff+ drop suggests a potential regression. He might still be a bottom-tier starter, but his sub-3.00 ERA is unlikely to last.
José Soriano's early-season success has faded, with his Stuff+ deterioration and increased walk rate. He looks more like a one-month wonder than a consistent performer.
J.T. Ginn's surprise free-agent find status is fading, with his Stuff+ drop and overperformance of SIERA/xERA. His sinker is his only saving grace, but it's not enough to sustain his success.
Trey Yesavage's disparity between SIERA and xERA is intriguing. While his xERA suggests he deserves his low marks, his BABIP is due for a rise, which could impact his performance. His recent Stuff+ decline is a cause for concern.
Paul Skenes' appearance on both the Stuff+ and Location+ decliners lists is a red flag. His Stuff+ has been down all season, and his recent outings suggest a potential implosion.
In conclusion, the world of baseball is full of surprises, and these Stuff+ gainers and decliners highlight the ever-changing landscape of the game. It's a reminder that performance can fluctuate, and what matters is how players adapt and respond to these changes. Keep an eye on these pitchers, as their stories unfold and impact the league.
