Yes! But you have to make sure you're following the law. Note: Avoid anything resembling DeflateGate.

Here's the link to the Federal Law related to Fantasy Sports and collecting money: 

http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=109_cong_bills&docid=f:h4954enr.txt.pdf

Pay special attention to TITLE VIII—UNLAWFUL INTERNET GAMBLING ENFORCEMENT.

Just so you know, payment processors keep an eye out for events resembling gambling accounts, and often will disable an account if they think it could be up to no good. Proceed with caution, make sure you follow the law.