Any more information? It's a Rawlings Players choice ball. Those were often used for large volume signings. Does it have any kind of authentication sticker? Do you have a likely geographic region where it originated?
First off, I am not a follower of baseball or sports whatsoever. But I have a slight interest in forensics so I took this challenge to see if I could help by doing some sleuthing.
Could be wrong but I think the answer you're looking for is a Boston Red Sox player named Will Middlebrooks.
Thank you thank you thank you! I am so happy. Will Middlebrooks was indeed number 16 as in infielder and the autograph matches perfectly. I am so impressed and grateful!