Blake Treinen has spent a whole profession as probably the greatest sinker-heavy relievers in all of baseball. Since his debut, he’s been probably the greatest relievers in baseball — interval. That feels like hyperbole but it surely isn’t. From 2014 by 2022, he ranked ninth in FIP-based WAR and fourth in RA9-WAR amongst all reduction pitchers. He additionally ranked second in groundball charge amongst relievers who threw 400 or extra innings. That’s elite efficiency, and he did it with a constant assault of sinkers and sliders.
As his profession has worn on, Treinen has made one massive shift: He began throwing an enormous sweeping slider. He was an early poster boy for the sweeper revolution. From 2014 by 2020, his slider averaged about an inch of horizontal motion. Beginning in 2021, he modified the way in which he threw it, and that quantity blew as much as almost seven inches. That turbo-charged his strikeout charge, and 2021 was one among his higher seasons regardless of intermittent command issues.
These two issues embody most of what individuals find out about Treinen. He will get a ton of grounders and he throws a giant outdated sweeper. In reality, he was on the vanguard of a pitcher sort that now appears to populate each main league bullpen: the sinker/sweeper righty. You possibly can image this man, even when you don’t know his identify on each single squad. He lives on the east/west airplane, and produces loads of ugly swings and possibly a success batter or two when his sinker veers into the righty batter’s field seemingly out of nowhere.
Treinen missed most of 2022 and all of 2023 with an never-ending array of accidents. He handled a capsule tear in his shoulder. He had surgical procedure to restore each his rotator cuff and his labrum. He cracked two ribs and bruised a lung when he acquired hit by a line drive in spring coaching whereas trying his return. It felt like he may by no means return, or could be a shell of his former self if he did. We’ve seen it occur to pitchers sufficient occasions that it’s by no means stunning, solely unhappy.
Excellent news, although. Treinen has come again simply as efficient as ever. His velocity is down a couple of ticks, however his fastball has the identical sinking motion as at all times and his slider is transferring much more than it was earlier than he acquired injured. By way of 17.2 innings of labor, he appears like the identical outdated Treinen – with only one slight exception.
Fantasy analyst and FanGraphs alum Brad Johnson pointed the change out to me a couple of weeks in the past, and it’s a kind of issues that, as soon as seen, can’t be unseen. Treinen continues to be putting out a ton of opposing hitters. He nonetheless sometimes struggles with walks. He nonetheless throws his sinker a 3rd of the time, his slider a 3rd of the time, and a cutter and four-seamer to fill within the gaps. However he’s racked up 18 fly balls and solely 16 grounders to this point, and it’s laborious to think about something much less Treinen-y than that.
I do know what you’re pondering, as a result of I used to be pondering it too. Say it with me now: small pattern measurement theater. Anybody can do something in 20 appearances. Wake me up when he runs these charges for a 12 months or two. There’s one drawback with that: the proof. Right here’s Treinen’s groundball charge, in rolling 20-game segments, for his total profession:
This isn’t simply enterprise as ordinary. So I assumed I’d look into what has modified, and whether or not we are able to be taught something broader from this improvement. In any case, a lot of pitchers throughout baseball are following the tough Treinen blueprint. May the identical factor be in retailer for them?
Treinen’s sinker continues to be a grounder-inducing pitch, but it surely actually appears to be much less so than earlier than. In his profession, he has a 65.3% groundball charge on the pitch. He’s all the way down to 58.8% this 12 months, which doesn’t look like a giant hole, however that underscores the change. A technique of it’s that his ratio of grounders to fly balls has declined from 4.66 to 2.5. Or possibly this can do it for you: From 2015 by 2022, the typical launch angle towards Treinen sinkers was -1. In different phrases, the typical hit was pounded downwards. That’s not fairly the very best within the sport, however solely the very best sinker throwers rack up numbers under zero. Clay Holmes had the heaviest sinker in that point interval at -8, whereas Logan Webb and Framber Valdez are every at -3. Marcus Stroman is at -1, Ranger Suarez at -2. Treinen match proper into that cohort.
This 12 months, the typical launch angle towards Treinen sinkers is as much as 9 levels. Batters simply couldn’t raise his sinker earlier than; this 12 months, they’ve already hit 5 balls at 30 levels or increased. That’s a full 12 months’s complement of fly balls for Treinen.
I’m admittedly delving into tiny samples at this level, however Treinen is throwing his sinker up within the zone greater than ever earlier than. This 12 months, 23% of his sinkers have been up within the zone; his highest single season earlier than 2024 was 18.5%, and his profession common was 13%. Excessive sinkers are completely tremendous pitches – they simply work in a different way. These fly balls that opponents have hit towards Treinen have been fairly terrible this 12 months, actually: 4 innocent outs and a ball that Teoscar Hernández dropped for an error.
Treinen’s sinker nonetheless grades out properly on each pitch mannequin I might scrounge up. He’s nonetheless killing its pure backspin to a powerful diploma, and it nonetheless explodes to his arm facet. He’s simply recognizing it somewhere else, and whereas he’s nonetheless getting nice outcomes, they give the impression of being totally different than they did prior to now.
That brings us to Treinen’s sweeping slider, which can be producing fly balls in a manner he simply didn’t prior to now. This time, although, the perpetrator isn’t mysterious. Sweepers make for popups. That’s a characteristic, not a bug. The pitch drops lower than you’d anticipate for a breaking ball and tails away from same-handed hitters, which leads to weak elevated contact.
The Treinen I image, the man who closed for the A’s, didn’t throw this slider. He threw a traditional gyro slider, with little horizontal motion and a few downward break. It fell as a lot as the present one regardless of a five-mile-an-hour velo benefit. The brand new one ought to fall farther, because it has extra time for gravity to work, however its motion simply isn’t the identical. The result’s a whole lot of swings below the ball. Sliders are alleged to fall greater than Treinen’s does.
If you happen to’re searching for the mathematical expression of that thought, it’s this. Treinen’s outdated slider, which he threw from 2014 by 2020, produced a 2.34 GB/FB ratio. It was a heavy pitch, identical to his sinker. His new slider, from 2021 to current, checks in at an excellent 1.0. Each pitches have been fairly efficient, with a slight edge to the brand new one. However his new sweeper will get to these related ends in an especially totally different manner, with popups and whiffs as a substitute of grounders and whiffs.
Lastly, there’s the matter of Treinen’s cutter. He dabbled with the pitch in Oakland, however began leaning on it extra after becoming a member of the Dodgers. It’s a logical transfer, as a result of neither of his main pitches are unimaginable towards lefties. From 2014 to 2020, he threw 63.1% sinkers to lefties. Then the Dodgers acquired severe about avoiding platoon disadvantages with a sinker, and his utilization has dropped to 18.5% since. One thing has to fill that void, and on this case, it’s the cutter.
Treinen’s cutter isn’t a very standout pitch, however he nonetheless throws it greater than half the time towards lefties. It doesn’t have notable floor/fly splits, and batters have solely put eight of them in play this 12 months anyway. However it’s simply one other manner that he’s made utterly logical adjustments to his sport that lead in direction of extra fly balls and fewer grounders. From 2014 by 2020, Treinen threw 425.2 innings, and coaxed 181 lefty groundballs along with his sinker. Within the 95 innings he’s thrown since then, he’s allowed precisely one lefty to hit a grounder off of his sinker. They merely don’t get to see the pitch sufficient to do a lot with it.
Is it a coincidence that GB/FB ratio is at its lowest level in our 2002-present database? Clearly not, and you’ll’t clarify all of it with altering hitter conduct. Certain, hitters try tougher than ever to get the ball within the air, however pitchers have an element to play too. Sinker/slider guys are more and more utilizing their pitches to get weak elevated contact as a substitute of simply becoming one cookie-cutter mould. Treinen is an instance of the broader development: use your pitches to get outs, to not fulfill some generic ultimate of how issues ought to work. He’s nonetheless the identical man – and but very totally different on the identical time.
