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Kyle Chapman Pony League 2009 |
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All players |
Fielders |
Pitchers |
Catchers |
Pitcher-catchers |
Comments |
| total number responding |
93 |
17 |
62 |
23 |
11 |
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| number screened (examined by Dr. Metzger) |
91 |
17 |
62 |
23 |
11 |
just about everyone who filled out a questionnaire was examined |
| % of league examined |
68.9 |
n/a |
n/a |
n/a |
n/a |
just a bit less than last year; no significant difference |
| average player age (years) |
13.4 |
13.1 |
13.4 |
13.5 |
13.4 |
As expected, pitchers and catchers have more 14 year-olds than fielders |
| % all players left handed (normal population is 9%) |
10.6 |
5.9 |
12.3 |
8.7 |
9.1 |
It is true that baseball slightly selects left-handers, fielding strongly selects right-handers, pitching strongly selects left-handers, and catching does not select right or left handers (at least not in this pony league) |
| Average mos player plays per year |
didn't record |
didn't record |
9.7 |
didn't record |
9.2 |
Only recorded months played per year for pitchers - will change that to include all players next year |
| % reporting pain in arm when throwing |
11.7 |
0.0 |
16.9 |
6.2 |
36.3 |
*Pitching and catching make it very much more likely that a player will have arm pain at some point, with pitching more strongly associated with arm problems than catching. Those who pitch AND catch are twice as likely to have arm problems as those who only pitch, and 6 times more likely than those who only catch. Fielding/batting does not cause arm problems. |
| % capsular ligament too tight (predisposes to injury in shoulder) |
10.8 |
11.8 |
10.8 |
17.4 |
9.1 |
Using GIRD>age in years |
| % who play other overhead type sports like quarterback or swimming |
16.0 |
11.8 |
15.4 |
6.2 |
9.1 |
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| % who report they are pitchers |
64.0 |
n/a |
n/a |
n/a |
n/a |
players are categorized as pitchers and/or catchers based on their saying so on the questionnaire |
| % who report they are catchers |
23.0 |
n/a |
n/a |
n/a |
n/a |
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| % who report they are pitchers AND catchers |
11.0 |
n/a |
n/a |
n/a |
n/a |
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| % who throw: |
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| fastball |
n/a |
n/a |
100.0 |
n/a |
100.0 |
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| changeup |
n/a |
n/a |
95.3 |
n/a |
100.0 |
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| curveball |
n/a |
n/a |
78.5 |
n/a |
63.6 |
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| slider |
n/a |
n/a |
12.3 |
n/a |
27.3 |
pitcher-catchers are more likely to throw sliders |
| knuckle |
n/a |
n/a |
4.6 |
n/a |
0.0 |
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*this is the marquee finding of this study |
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