Roster moves for tuesday

Yes, thank you, I am well aware of Riley's career arc to date. I too am an avid Braves fan.

I have no idea what that analysis proves...as if his age 23 home splits covering a handful of PAs are predictive of anything? Did I miss the sarcasm?

I'm confident I've pinpointed Riley's issue being his inability to make contact (low Z-Contact% is a fact), which is probably at least partially tied to his inability to make a decision on pitches quickly enough for his long swing (confused with "slider speed bat") to make consistent contact. This lack of timely decision making is also manifesting itself in a high O-Swing% because he doesn't know when not to swing. Missing pitches in the zone and swinging at pitches out of the zone is deadly for an MLB hitter...like literally the worst possible scenario.

Right now Riley is a pure guess hitter, because he has to guess to make contact. Right now, he is not a good hitter due to that fact. I have been the low man on Riley for a long time, and wouldn't hesitate to trade him for help elsewhere.

Can he get better reaction times? Can he shorten the swing? Can he get better at guessing? Can he do more damage when he does guess correctly? All of those are possible avenues for improvement for Riley.

How many hitters dramatically improve their Z-Contact% and O-Swing% from MLB-worst to playable in their mid-20s? I haven't found a single example of such a player.

How have Riley's swing/contact numbers looked thus far this year? Any improvement?

It's obvious the easy to find/interpret stats haven't gotten any better.
 
Pitch Info Plate Discipline
ProjectionsMinor LeaguesRegular MLB Seasons

Season Team O-Swing% Z-Swing% Swing% O-Contact% Z-Contact% Contact% Zone% Pace
2019 Braves 34.7% 80.4% 56.2% 42.6% 73.5% 63.4% 47.0% 23.3
2020 Braves 28.1% 75.4% 52.8% 48.9% 75.0% 68.4% 52.2%
Total - - - 33.3% 79.2% 55.4% 43.8% 73.9% 64.5% 48.2% 23.3
 
Right now Riley is a pure guess hitter, because he has to guess to make contact. Right now, he is not a good hitter due to that fact. I have been the low man on Riley for a long time, and wouldn't hesitate to trade him for help elsewhere.

Can he get better reaction times? Can he shorten the swing? Can he get better at guessing? Can he do more damage when he does guess correctly? All of those are possible avenues for improvement for Riley.

How many hitters dramatically improve their Z-Contact% and O-Swing% from MLB-worst to playable in their mid-20s? I haven't found a single example of such a player.

That does seem to be the question: Does he struggle because he doesn't have the bat speed or because confidence in his approach at the plate is deficient and he doesn't know what to expect leaving him pure guess work? If it is bat speed, it will consistently be a problem. If it is simply gaining confidence at a level we can expect improvement. His struggles at almost every progression through the system indicate to me it is likely a confidence/comfort issue. 50 ABs at home vs. 50 ABs on the road also seem to indicate a confidence/comfort issue. I hope I am right.
 
That does seem to be the question: Does he struggle because he doesn't have the bat speed or because confidence in his approach at the plate is deficient and he doesn't know what to expect leaving him pure guess work? If it is bat speed, it will consistently be a problem. If it is simply gaining confidence at a level we can expect improvement. His struggles at almost every progression through the system indicate to me it is likely a confidence/comfort issue. 50 ABs at home vs. 50 ABs on the road also seem to indicate a confidence/comfort issue. I hope I am right.

It's not bat speed. Hitters don't generate above average exit velocities with poor bat speed.

For hitters it's 1 of 2 things:

1. A physical inability to see pitches, have the brain recognize something (spin, trajectory, location, or whatever MLB hitters recognize that we mortals can't), make a decision on which muscles to activate (swing or don't swing), fire those electrical impulses to the muscles, and then those fast twitch muscles reacting quickly to make the bat hit the ball. I suspect that portion of the hit tool is pure genetics, and either that biological system is MLB caliber, or it isn't...sort of like height. For 99% of humans, that system is lacking, and they can't be baseball players no matter what they do.

2. A long swing that takes (for example) .15 seconds to get through the zone rather than .13 seconds. Riley has had issues with an arm bar delaying his swing. We see guys like Francoeur with a horrid bat wrap lengthening a swing. Sometimes guys have a super long hand load, or a sweeping bat path. Conversely, someone like Acuna has no bat wrap, very little hand load, and fires the bat from a position fairly far from his body (his swing really is beautiful). To me, those issues can be identified and improved. Unfortunately, I don't have the means nor the expertise to even attempt to pretend I know how to diagnose or fix those issues. There are guys who do though...
 
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How have Riley's swing/contact numbers looked thus far this year? Any improvement?

It's obvious the easy to find/interpret stats haven't gotten any better.

They have gotten better. He has improved from worst in baseball in both areas to just really bad. Something like #130-150 out of 175 hitters in 2020 with his number of PAs. With those improvements, he has improved from being a bad hitter to a below average hitter...at 3B.

So I can buy he is improving, but the issue is that improvement isn't enough. The REAL issue is that having a cheap replacement level player (0-1 WAR) at 3B is probably acceptable for this team considering the massive holes in the rotation. If Soroka was still walking, and Folty was still sane, Hamels loved baseball at all, and Wright or Touki figured out how to do anything consistently on the mound, upgrading 3B would probably be a much more pressing need.
 
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