Chipper Jones - #1 whiner in baseball?

[Jim Porter]

If any of you want to get a good idea of strike zone accuracy by MLU's you can watch the Gameday application. Most parks are now running the PITCHf/x tracking system which displays the path, trajectory, release speed, result speed, amount of break, and position in the strike zone for every pitch during a game. It is accurate to within a half-inch and often much less. Most pitches that I track are accurate to within 2/10's of an inch. You can also go back and replay a pitch sequence from any at-bat. Here's a screenshot I just took during the Cubs game:

[bob jenkins]

Originally Posted by Jim Porter

Most pitches that I track are accurate to within 2/10's of an inch.

How do you know? (Not questioning, just asking)

[Jim Porter]

Originally Posted by bob jenkins

How do you know? (Not questioning, just asking)

The software displays the error margin for each pitch triangulated from three camera positions.

[mbyron]

Hey Jim, post Chipper's at bat from the whining incident.

[Jim Porter]

Originally Posted by mbyron

Hey Jim, post Chipper's at bat from the whining incident.

Here it is. The two red dots are the first two pitches of the at-bat and both were called strikes. He ended up walking.

[Rich]

Originally Posted by Jim Porter

Here it is. The two red dots are the first two pitches of the at-bat and both were called strikes. He ended up walking.

Well, lookie there. Right in the strike zone.

[GarthB]

Originally Posted by Jim Porter

Here it is. The two red dots are the first two pitches of the at-bat and both were called strikes. He ended up walking.

Looks like Reed did good job and Larry did what he's most famous for.

[johnnyg08]

Originally Posted by Jim Porter

Here it is. The two red dots are the first two pitches of the at-bat and both were called strikes. He ended up walking.

nice posts jim...the gameday feature is nice.

[BigTex]

Originally Posted by Jim Porter

Here it is. The two red dots are the first two pitches of the at-bat and both were called strikes. He ended up walking.

The bottom of the strike zone seems kinda high to me.

The STRIKE ZONE is that area over home plate the upper limit of which is a horizontal line at the midpoint between the top of the shoulders and the top of the uniform pants, and the lower level is a line at the hollow beneath the knee cap. The Strike Zone shall be determined from the batter's stance as the batter is prepared to swing at a pitched ball.

The bottom of the zone on the gameday screen appears to be at the top of the knees.

[GarthB]

Originally Posted by BigTex

and the lower level is a line at the hollow beneath the knee cap. The Strike Zone shall be determined from the batter's stance as the batter is prepared to swing at a pitched ball.

The bottom of the zone on the gameday screen appears to be at the top of the knees.

Just checking, and meaning no insult...you do know the difference between "beneath" the knee and "below" the knee...right?

[BigTex]

Originally Posted by GarthB

Just checking, and meaning no insult...you do know the difference between "beneath" the knee and "below" the knee...right?

No insult taken. I read the definition of the zone as the bottom being the soft soft (or hollow) just south (toward the feet) of the knee cap. Is this not how you interp?

[GarthB]

Originally Posted by BigTex

No insult taken. I read the definition of the zone as the bottom being the soft soft (or hollow) just south (toward the feet) of the knee cap. Is this not how you interp?

Nope. "Beneath" in this case could kind of be replaced with "behind" if you use the cap as the knee.

[Jim Porter]

I should have clarified this -- the virtual batter you see is not accurate. That virtual batter is the same for everybody, except he's on the right side for a right-handed hitter. The strike zone is not properly aligned with the virtual batter. The relationship between the strike zone and each pitch is accurate for each batter, it is just that virtual batter that's not accurate. It is a work in progress, and maybe the virtual batters will be better next year -- but they are just there for show.

I wish I could say more about the sizing of the strike zone, but I've signed a confidentiality agreement and that information is not something I can share.