Appendix Table A1.

Preseason Survey ^a

Questions	Potential Answers/Units
Which hand do you use to pitch with?	Right, left
What is your height?	Feet, inches
What is your weight?	lb
What is your mean fastball velocity?	Miles per hour
What is your peak fastball velocity?	Miles per hour
At what age did you start pitching?	Years
How long have you been pitching?	Years
How many pitches do you throw in the mean game? Warm-up?	NA
Do you play for any other teams?	Yes, no
How many games did you play last season?	NA
How many games did you pitch last season?	NA
How many days a week do you play baseball?	Days
How many months per year do you play baseball?	Months
How many consecutive months off throwing did you have last year?	Months
Have you ever participated in a “showcase”?	Yes, no
Have you ever returned to the mound after being removed?	Yes, no
Do you play any positions other than pitcher?	Yes, no
Which positions?	Fielding
How many innings do you play these other positions each game?	NA
Do you play other sports?	Yes, no
Which other sports?	NA
Have you ever participated in a weighted ball program?	Yes, no
With which weight ball?	Heavier, lighter
Have you used any other programs to increase your velocity?	Yes, no
Which programs?	NA
Have you ever been diagnosed with a pitching-related injury?	Yes, no
Describe the injury and treatment.	NA

^aNA, not applicable.