Infielders
You have to be good enough to play shortstop in high school or travel ball at an extremely high level if you want to play infield in college.
I'm not saying you have to be your team's shortstop. I am saying you have to be athletic and good enough to play the position and should take ground balls at shortstop.
The majority of college infielders were left side infielders in high school, mostly shortstops that can really play defense.
If you are a high school 2nd baseman, 3rd baseman or right handed 1st baseman and don't have the ability to play shortstop in high school and travel you are probably not a college infielder.