[quote="Beast of the East" post=357446][quote="gman" post=357394]Diaz and Familia at the back of the pen mean we have no chance of pulling out the playoffs. This offense can't always bail them out. Familia proved he can't handle a big stage. I have no idea why they brought him back.
I saw this analysis of Diaz on Amazin Avenue and thought it was interesting
Data doesn't lie
Last year, Diaz grooved 2.5% of his sliders. (That is, middle-middle, where virtually no slider should end up.)
This year, Diaz has grooved just under 8% of his sliders. His groove rate is virtually unchanged against lefties (right around 1 percent in both years), but against righties, it’s jumped from 3.9% last year to 10.8% this year
Last year, against righties, he was giving up a 20% line drive rate on his slider. This year, over 28%.
Last year, his slider ISO against was .151 for righties and .020 for lefties. This year, it’s .271 for righties and .235 for lefties.
Against righties, he left about 15% of his sliders middle-to-up in the zone last year. This year, it’s just under 22%. Last year, around 15% of his sliders ended up middle-in below the zone against righties. This year, that’s only about 7.5%.
Against lefties, it’s a similar-ish story. Fewer pitches middle-up, but he’s lost the ability to consistently get the slider down-and-away-ish to lefties. Last year, about 25% of his sliders to lefties ended up middle-away below the zone. This year, that number is below 16%.
Why is Diaz struggling? He’s a two pitch pitcher who has lost command of one of his pitches. His slider sometimes works fine, and he still gets whiffs off of it (even if the whiff % is down from 29% to 23%), but he can’t consistently get it where it needs to go, and as a result is leaving it up in the zone in hittable areas. And as Tom Seaver once said – catchers don’t catch hanging sliders, fans catch hanging sliders.
Posted by Verklemptomaniac on Sep 6, 2019 | 11:59 PM[/quote]
I heard that baseballs are more slippery this year and that it's much harder to throw a slider well. Has anyone heard this?[/quote]
Yes, Syndergaard had complained about this earlier in the year.