Soriano by the Pitches
Hoping to understand Alfonso Soriano's hot and cold streaks this year, I turned to the incomparable Fan Graphs to break down his present and historical success against different pitches. The results suggest that Soriano is losing the skill that made him one of the more feared hitters in the game, but that he might have found a method to compensate for this loss. Below is a chart showing the percentage of fastballs Soriano has seen each year since 2005, with 2009 broken down per month. It also shows his ranking among hitters seeing the fewest fastballs, his "runs above average" number on fastballs, (wFastball) and how high he ranks among all hitters, and his overall OPS. (As in, not specific to fastballs) The most important thing to notice here is his wFB rank.
|Date||Fastball%||FB% Rank||wFastball||wFB Rank||OPS|
You probably have noticed a couple of striking trends going on here. First, Soriano has progressively moved from being one of the most effective hitters in baseball against the fastball to being quite pedestrian. Second, pitchers have not noticed and adapted to this change: They contiue to avoid throwing fastballs to Soriano as if he were the same hitter he was in 2005. He's not.
So how do we explain Soriano's April and July, when he hit like the hitter for whom the Cubs offered that premium contract?
Finding that answer requres looking at Soriano's results swinging at sliders.
|Date||Slider %||SL % Rank||wSlider||wSL Rank||OPS|
It makes sense that if pitchers fear Soriano's ability to hit the fastball, they would throw him an inordinate number of sliders, and indeed the table indicates Soriano consistently sees among the most sliders in the game. Throughout his career Soriano has proven to be one of the weaker hitters against sliders.
This potentially could be a toxic combination: A fastball hitter who no longer can hit fastballs, and still doesn't see any fastballs to boot. But then look at the two months this year that Soriano has hit: April and July. The numbers indicate that Soriano's output isn't due to hitting fastballs with the authority to which he is accustomed; instead he's hitting sliders in a way that he previously did not. Well.
Of course, other factors might be at work as well, but if so I have yet to find an obvious candidate. Such marked changes do not appear when looking at Soriano's results against other pitch types. Neither does plate discipline seem to be the issue. Soriano is both swinging at fewer pitches outside of the strikezone this year, and making more contact when he does swing - both at pitches inside and out of the zone, and it shows no meaningful fluctuation from month to month in 2009. His BABIP shows severe fluctuations from month to month, but that appears to be driven by corresponding changes in his line-drive percentage, so there's nothing unusual there.
Assuming that these stats do reveal a truth about the real world (I know, I know), there are several questions to consider going forward. Most obvious, what is the cause behind Soriano's diminish returns against fastballs? Is it that he now has a "slider speed bat"? Is it a matter of approach at the plate, where he has stopped guessing fastball in order to better hit the breaking stuff? The latter can be fixed, the former, not so much. Looking at how consistent the downward trend is, my hunch is that it's the former, a slow erosion in the speed of his bat. If it's the former, and Soriano is losing some quickness in the swing, will we see him move away from his preference for heavy bats? And will he be able to compensate by consistently hitting sliders with the results found in April and July? Then, there are questions concerning how pitchers resond. At what point will pitchers adjust to the fact that Soriano does not hit fastballs with the authority he once did, and adjust their pitch selection? There may be a lot riding on these questions.
Update: I was unaware of it as I wrote, but less than a month ago R.J. Anderson at Fan Graphs wrote about how few fastballs Soriano sees. He doesn't mention either Soriano's historical trend of diminishing results on the fastball, or the weird fluctuations this year on the sliders; instead he reaffirms the notion that Soriano is a good fastball hitter and the problem is in the dearth of fastballs he sees. I think he may be wrong there, but I should at least try to be a good scholar and cite the work.
Not certain why the site has been slowed. Worked much of Wednesday on it and will continue today. Sorry for the inconvenience. I will probably take it offline for a while, but it will be up before the game against the Mets.
Mine has been really slow to load -- on different computers from different locations.
Anybody else have issues accessing the site this afternoon/evening?
Boras is 63, maybe he'll be retired or dead by the time Bryant, Russell, Almora, Albertos all hit free agency. Doubt he will be before Jake hits there though.
Interesting choices when guys get healthy.
LaStella, Fowler & Soler replace Coghlan, Almora and Sczcur? I assume they don't want Almora to sit.
Despite MIggy's demise, I assume they keep him around to mentor Contreras?
I believe Willson now has more CS than MIggy. The kid has an arm. Also, Russell is amazingly good on those plays at 2nd.
oh yeah...thanks joe/billy.
poor outing, still got the win, go cubs.
Although it felt like it, Jake didn't lose to them -- he got the W. (Assuming you are referring to Monday's game)
Arrieta didn't lose to the Reds. He got the win -- he just didn't pitch like we expect him to.
almora's 1st HR!
it's not like this CIN team is lost-cause horrible, but aside from defense and power this is a truly horrible team.
kinda crazy arrieta lost to them and yesterday's game had to go 15 innings for the cubs win.
It looked like Hamilton got screened by Duvall and that Duvall just barely deflected the ball off of his glove--redirecting it slightly without taking away much of its momentum.
At least it didn't turn into a Schwarber/Fowler situation. Hamilton and Duvall are both pretty important youngish players for the Reds.
he walked off the field on his own. aside from a concussion watch and some attention to his leg/knee that buckled a bit under him, the biggest thing hurt was probably his pride after the ball knocked off his skull.
After last night, an inside-the-park HR seems kind of run-of-the-mill somehow.
Sounds bad for Hamilton. Hope he's okay--listening on the radio.
SHOW ME THE MONEY: Jose Albertos has signed with Mega-Agent Scott Boras.
Albertos has already received his signing bonus and won't see any additional significant money until he reaches the big leagues, so this is a long-term investment for the Boras Corporation.
Other Cubs represented by Boras include Jake Arrieta, Kris Bryant, Addison Russell, and Albert Almora Jr.
I am glad Joe is managing this team and not Old and Blue!