With each team in your account you can import roster information from a spreadsheet.
To import your roster go to the Teams page.
Click on the team you want to import the roster for.
Click Import Roster.
Go to your spreadsheet, make sure you have columns for each required field, copy the info on the spreadsheet, and paste it into the space on the import page. Set your field delimiter to tab (unless you specifically know its comma), check the First Row is Header box (if applicable), and then click the green continue button in the bottom right corner.
Now go through each column and assign the appropriate data fields to them. If you used the First Row is Header box then go through and fix any incorrect data fields or ones that it didn't get. Once you've done that click the green continue button in the bottom right corner.
Now you should see that roster info entered within that team, and you can now edit it from within your coach account.
Possible Data to Import
First Name, Last Name, Athlete ID, Jersey Number, Jersey/Shirt Size, Height, Weight, Bats, Throws, School, Graduation Year, GPA, Birth Date, Position, Email, Address, City, State, Zip, Mobile Phone, Twitter Handle, College Commitment.
Below is a spreadsheet template that can help you get started. The template includes all the possible required fields for importing, you can adjust to fit your specific situation.