Baseball may have seemed to have solved the catcher concussion problem when it instituted new rules governing the play at the plate in 2014. Despite some hiccups, eliminating the play at the plate seems to eliminate the main source of player on player in-game violence — and the other, the play at second base, is currently under scrutiny. Despite the odd pitch to the head and outfielder into the wall, that should make baseball one of the safest sports for a young brain. The numbers, especially for catchers, provide hope.

But there is still one repetitive play that causes concussions regularly for catchers — and there might be a fix to that problem, too. A fix that seems to come with even fewer ramifications for the game.

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At ESPN, they recently wrapped up their prospects week. I thought I’d zag from that zig, however, and instead wrote a piece for Insider about 30-year-olds and how they’ll age. Using some research from Jeff Zimmerman on aging by player type, I tried to spot some 30-year-olds who are about to go into the tank, and some that might age better than we expect.

But while working on the piece, I asked Zimmerman to update the research on player-type aging, starting in 2005. That’s the year baseball stiffened their steroid policy. Here’s something strange: in this, what we might call the “post-PED era,” it appears as though certain player types have begun aging in an entirely different way.

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Deception seems impossible to quantify. How are you going to put a number on something like the Invisiball thrown by Yusmeiro Petit? The ball is there, and then it isn’t, and then it’s back! Put that in your number machine, nerd boy.

Except, hidden in that description of the Invisiball is a possible guide. The release point. The release point is a huge moment for the hitter — it can tell him about the type of pitch and type of movement he’s about to see even before the ball is released.

Think of Brad Ziegler. You see that arm dragging along the ground, and you know the ball is going to move down and away from you. You adjust. Think of Darren O’Day. You see that arm slot, and you think the ball will drop, and when it doesn’t, you miss his Submarine Riseball. Tyler Clippard! You see that over the top and you think the ball will rise — and his fastball does, but not his changeup.

So maybe deception is deviation from the expected movement given a pitcher’s arm slot. Or at least that’s maybe one sort of deception. It probably won’t help us understand Petit’s Invisiball any better, but it may give us something with which to work on this hard-to-define aspect of pitching.

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12:02

the eno, the one, the matrix: eno time –

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12:00

vader: it’s time, it’s time!

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The Padres have been linked to two shortstops this offseason. One was four years younger than the other, and still in some command of the tools that made him an All-Star-level player. But Ian Desmond is risky, and more expensive than $4 million guaranteed over one year with a mutual option for 2017. According to multiple sources, that’s the deal the Padres have agreed to hand Alexei Ramirez, who should be worth that price, no matter which Alexei Ramirez shows up.

One year, Alexei Ramirez hit 15 homers and stole seven bases. The next year, he hit nine homers and stole 20. And that’s not the only place where we’ve seen wild swings from Ramirez. He’s walked 2.6% of the time in a year, and 8.1%. He’s produced an isolated-slugging figure of .185, and also of .096. He’s swung and missed 10.7% of the time, and 6.5% of the time. He’s hit nearly one grounder per fly ball and also nearly two grounders per fly ball. He’s pulled the ball 38% of the time, and also 54% of the time. He’s shown below-average defense, and league-leading defense. He’s swung at 60% of the pitches he’s seen, and 49%.

Throughout it all, he’s recorded nearly 5,000 plate appearances and been above-average with the stick for a shortstop, and the third-best overall glove since he debuted in 2008. Even with all the oscillating, all the bad plate discipline, all the weird changes to his game, Ramirez has been above-average in all of his years save two — his first and his last.

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